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Which one of the following is the simplest form of
#frac{7(2r+3)+4r-3}{2(r+1)+4r+7}#
A.#frac{6r+6}{2r+3}#

B.#frac{6r+8}{2r+3}#

C.#frac{9r}{3r+4}#

D.#2 1/2#