Can anyone please answer the question in full details? Thanks!

c=1, 3. Let X1,..., Xn bei.i.d. discrete random variables with pmf f (x; p) = 2p(1 - p), x = 2, (1 - p)?, C = 3, 0, otherwise (a) [1] Find the parameter space of p. (Hint: what values of p make f (x; p) a valid pmf?) (b) [1] Find the MLE of p