15. Which of these involves reductive elimination? (3 points)
(A) \( \mathrm{Rh(Cl)(PPh_3)_3 + CH_3I\rightarrow trans - Rh(Cl)(PPh_3)_3(CH_3)(I)} \)
(B) \( \mathrm{NH_4[Re(CO)_5] + CH_3I\rightarrow Re(CO)_5CH_3 + NH_4I} \)
(C) \( (\mathrm{C_5H_5})\mathrm{Fe}(\mathrm{CO})_2\mathrm{CH}_2\mathrm{CH}_3\rightarrow \mathrm{CO} + (\mathrm{C_5H_5})\mathrm{Fe}(\mathrm{CO})(\mathrm{H})(\pi -\mathrm{CH}_2\mathrm{CH}_2) \)
(D) \( (\mathrm{C_5H_5})\mathrm{Mn(CO)_3 + PPh_3}\rightarrow \mathrm{CO} + (\mathrm{C_5H_5})\mathrm{Mn(CO)_2(PPh_3)} \)
(E) \( \mathrm{NH_4[Ni(CH_3)(CO)_3] + HI\rightarrow CH_4 + NH_4[Ni(CO)_3I]} \)