Match the common antinutrients in food in Column I with their description from Column II.

Column I	Column II
1. Phytic acid	A. Interferes with functioning of thyroid gland
2. Saponins	B. Heat-stable, water-soluble glycoside
3. Isothiocyanate	C. Interferes with calcium absorption and forms kidney stones
4. Oxalic acid	D. Chemical name is myo-inositol hexakisphosphate

Options:

Correct option is B

Phytic acid → Its chemical name is myo-inositol hexakisphosphate. It is found in cereals and legumes and binds to minerals like zinc, iron, and calcium, thereby reducing their bioavailability. Hence, 1 → D.
Saponins → These are heat-stable, water-soluble glycosides present in legumes. They can cause bitterness and foaming but also have some health-promoting properties. Hence, 2 → B.
Isothiocyanates → Found in cruciferous vegetables (like cabbage, cauliflower, broccoli), they interfere with thyroid function by inhibiting iodine uptake, potentially leading to goiter. Hence, 3 → A.
Oxalic acid → Present in spinach, beetroot, and nuts, it binds with calcium to form insoluble oxalates. This not only reduces calcium absorption but can also lead to kidney stone formation. Hence, 4 → C.
Correct matching: 1 – D (Phytic acid = myo-inositol hexakisphosphate) 2 – B (Saponins = glycosides) 3 – A (Isothiocyanates = thyroid interference) 4 – C (Oxalic acid = calcium binding and kidney stones)
Thus, the correct answer is Option (b).