Ambiguity often arises due to（）， as is shown in the sentence “He is a hard businessman”，in which “hard” can mean both “hardworking” and “difficult”.

Ambiguity often arises due to（）， as is shown in the sentence “He is a hard businessman”，in which “hard” can mean both “hardworking” and “difficult”.
A、polysemy
B、homonymy
C、synonymy
D、antonymy
正确答案：A