Consider the following statements : Statement-I : Giant stars live much longer than dwarf stars. Statement-II : Compared to dwarf stars, giant stars have a greater rate of nuclear reactions. Which one of the following is correct in respect of the above statements ?

States that main-sequence stars (e.g., the Sun) later swell into red giants toward the end of their life cycle, implying giants represent a later evolutionary stage rather than a longer primary lifetime.

A student could combine this with the fact that main-sequence lifetime is determined by core hydrogen burning to reason that giants are a subsequent, typically shorter-lived phase of stellar evolution.

Provides an evolutionary timeline metaphor (main sequence = 'Infancy through Adulthood'; red giant/supergiant = 'Middle Age' or 'Old Age–Death'), indicating giants occur late in life rather than having longer overall main-sequence lifetimes.

Use the timeline plus standard knowledge that massive stars evolve more rapidly to infer giants (especially supergiants) do not have longer total lifetimes than long-lived dwarfs.

Explains that red giants burn the last of their hydrogen and expand, showing the giant phase involves consuming remaining fuel in an advanced stage.

Combine with the basic idea that fuel consumption rate affects lifetime to judge whether the giant phase is shorter than a long main-sequence lifetime.

Describes massive-star endpoints (Type I/II supernovae) and violent, rapid deaths for some stars, linking high-mass (often giant) stars to relatively abrupt ends.

A student could apply the external rule that higher-mass stars burn fuel faster to connect massive/giant stars with shorter lifetimes than low-mass dwarfs.

Notes red dwarfs are common, dimmer and cooler than Sun-like stars, suggesting a class of low-mass stars distinct from giants.

Combine with the standard fact that lower luminosity/cooler stars burn fuel more slowly to hypothesize that red-dwarf (main-sequence) lifetimes exceed those of giant (high-mass) stars.