Option 1: Magnesium and Vitamin D: This option is incorrect because milk actually contains magnesium and vitamin D. Magnesium is an essential mineral that helps with bone health and muscle function, and vitamin D is important for calcium absorption.

Option 2: Iron and Vitamin C: This option is the correct answer. Although milk is a good source of calcium, it is lacking in iron and vitamin C. Iron is important for the production of red blood cells and vitamin C helps with iron absorption.

Option 3: Calcium and Vitamin C: This option is incorrect because milk is actually a good source of calcium. It provides a significant amount of calcium which is essential for strong bones and teeth.

Option 4: Iron and Vitamin A: This option is incorrect because milk contains some amount of Vitamin A. Vitamin A is important for vision, growth, and immune function, and milk provides a small amount of this vitamin.

Therefore, the correct answer is Option 2: Iron and Vitamin C, as milk lacks these nutrients.