Please show the steps, thank you!

2. Let X1, ..., Xn ~ Poisson()), T(X) = e- if > > 0 0 O. W. and consider the square error loss. (a) Find the Bayes estimator for 1. (b) Now suppose we need to estimate o()) = e- with the same prior distribution and loss function. Find the Bayes estimator for $())