Read the sentence below:

An elephant's opinion carries a lot of weight.

Which of the following correctly explains the pun in this sentence and the word or words on which it is built?

A- Weight, refers to an elephants size and the importance of opinions

B- Carries, refers to the weight carried by the elephant

C- Elephant, refers to an animal known for its weight

D- Opinion we know that an elephant doesn't have opinions, people do