关于being tired of和tired of作状语的问题

题目

关于being tired of和tired of作状语的问题
_________ the fat dishes, he decided to change for a healthier diet.
A.Tired of
B.Being tired of
C.Being tired out
D.Tiring of
为什么选A不选B?

答案

being tired of是正在进行时,而题目应该是“已经厌倦了...”,所以应选A