Answer:
A: (Z)-3-chloro-4-ethyl-2,5-dimethyl-3-hexene
B: (cis)-3-chloro-4-ethyl-2,5-dimethyl-3-hexene
Step-by-step explanation:
The two two heavier groups around the double bond are chlorine and isopropyl.
Both of these heavier groups are on the same side therefore, they are designated as cis or Z conformer.