Calculating the expected value and variance

How do you calculate the expected value and the variance from a binomial distribution with parameters n=10 and p=0.25?

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Possible Answers

binom.stats(n=10, p=0.25)
press1
binom.pmf(k=5, n=10,p=0.25)
press2
describe(binom.rvs(n=10, p=0.25, size=100)).mean
press3
describe(binom.rvs(n=10, p=0.25, size=100)).variance
press4