Consider the following pairs:

Vitamin Deficiency :        Disease

1. Vitamin C       :         Scurvy
2. Vitamin D       :         Rickets
3. Vitamin E       :         Night blindness

Which of the pairs given above is/are correctly matched?
a) 1 and 2 only
b) 3 only
c) 1, 2 and 3
d) None

Ans-[A] 

Explanation – Nightblindness is caused by deficiency of vitamin A.
See the following link and learn the concepts very thoroughly.