In the question below, a sentence is divided into four parts out of which one…

In the question below, a sentence is divided into four parts out of which one part has an error in it. Find the part with error and mark that as your answer.

Ambiverts can be good salespeople because they are (A)/ able to listen to their clients and understand their needs (B)/ but also have an energy to sell (C)/ their firms’ goods and services. (D)/ No error.