A man has two annuities immediate with the same interest rate and the same level payments. The first is a 30 year annuity and the second one is a 15 year deferred 15 year annuity immediate. the present value of the first 4 times the present value of the second. Find the interest rate.

A) 7.3% B)7.4% C)7.5% D)7.6% E)7.7%