Suppose X has a Poisson distribution such that 3(λ = 1) = (λ = 2). Find the mean and variance of X for -10 ≤ X ≤ 15.

a) Mean = 5, Variance = 5
b) Mean = 3, Variance = 3
c) Mean = 1, Variance = 1
d) Mean = 2, Variance = 2