Match the following columns

Column I	Column II
a. Standard deviation of Binomial distribution	1. 3m
b. Standard deviation of Poisson distribution	2. 3
c. In case of normal distribution β2 is	3. $$\sqrt {{\text{npq}}} $$
d. The fourth moment Poisson distribution is	4. M + M2

A. a-1, b-2, c-3, d-4

B. a-3, b-1, c-2, d-4

C. a-4, b-3, c-2, d-2

D. a-2, b-1, c-4, d-3

Answer: Option B