If f(x)= a*, show that f(A + B) = f(A). f(B).Rewrite f(A + B) by substituting A + B for x in the given function.f(A + B)=Which law of exponents can be used to rewrite the expression above as a product?A. a^-s= 1/a^s= (1/a)^sC. a^0 = 1E. (ab)^s = a^s.b^sB. a^s.a^t = a^(s+t)D. 1^5=1F. (a^s)^t = a^st