A random variable X follows Poisson distribution such that probabilities P(X = 1) = P(X = 2). Now consider the following statements :
A. The mean of this Poisson distribution is 2.
B. The variance of this Poisson distribution is 2.
C. Probability P(X = 0) is equal to e-2
D. Probability P(X = 0) = P(X = 1)
Choose the correct answer from the options given below
1
A, B, and C only
2
B, C and D only
3
A, B and D only
4
A, C and D only