"广西",'彼岸","河岸","心爱","平安","奥秘"这六个词的注音中,应使用隔音符号的是哪个词

问题描述:

"广西",'彼岸","河岸","心爱","平安","奥秘"这六个词的注音中,应使用隔音符号的是哪个词

彼岸bi'an
平安ping'an
心爱xin'ai