With reference to 'Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct? 1. Other than USA and Russia, India is the only country to have launched a similar observatory into space. 2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth. Select the correct answer using the code given below.

Explicitly identifies AstroSat as an ISRO mission that makes scientific observations of stars and celestial objects (i.e., a space-based astronomical observatory).

Use this definition to look for other countries/agencies described elsewhere in the snippets as having comparable space science capabilities and infer they could/likely have launched space telescopes.

States India became the fourth agency to reach Mars orbit after the Russian, American, and the European space agencies, highlighting that those agencies have advanced interplanetary and space-science capabilities.

A student can reasonably check that agencies with such deep space capability (Russia/US/Europe) have also launched space observatories (e.g., by consulting a world map of space agencies or lists of major telescopes).

Shows the USA is the major player in space with substantially larger spending than India, implying broad capabilities in space science missions.

Combine this spending/capability clue with knowledge of US space history to infer the US has launched many space observatories and thus is a likely answer to the question.

Describes Mangalyaan as carrying scientific instruments to study Mars, illustrating a pattern: countries that conduct planetary science missions also field space science payloads.

From this pattern, a student can extend that other countries conducting planetary/space science (e.g., those mentioned in [2]) are likely to have launched space telescopes too, and then verify with basic external references.