In a bacterial cross in which the donor Hfr is a⁺b⁺ and the recipient strain F^- is a^-b^-,it is expected that recombinant bacteria______ .

A)will be a mixture of a⁺b⁺,a^-b^-,and a^-b⁺
B)will all remain a^-b^-
C)will all be a⁺b⁺
D)will be a mixture of a⁺b⁺,a^-b^-,a⁺b^-,and a^-b⁺
E)will be a mixture of a⁺b⁺ and a^-b^-