A. (CH_{2}=CH_{2}+Br_{2}frac{CCl_{4}}{
ightarrow CH_{2}Br-CH_{2}Br)
B. (CH_{2}=CH_{2}+[O]+H_{2}Ofrac{KMnO_{4}}{KOH}HOCH_{2}CH_{2}OH+H_{2}O)
C. (CHequiv CH+4[O]frac{HClO_{4}}{NaOH}CH_{3}-COOH)
D. (CH_{2}=CH_{2}+Br_{2}frac{NaOH}{
ightarrow CH_{2}Br-CH_{2}Br)