Explanation:

Vitamin A deficiency can cause vision related problems, even loss of vision sometimes. So, (a) is incorrect.
Iodine deficiency causes goitre and mental disability in children. So, (b) is incorrect.
Vitamin B1, also called as Thiamine, deficiency may lead to chronic diseases such as Beriberi which is a neurological and cardiovascular disease. Muscle weakness and energy deficit in body etc are
other symptoms associated with its deficiency.
Very small amounts of vitamin B1 are found in virtually all foods.