丙应承担什么责任？甲向乙借款2万元，并由丙从中作保，三人均在借款合同上签字。后甲请求乙推迟还款期限一年，乙应允，但提出推迟一年期间的利息为30%，甲同意，并签订了变更合同协议。甲、乙将变更合同的内容告知了丙。丙当时碍于情面，口头表示同意。后因甲到期不能还款，进发生纠纷
丙应承担什么责任？

A. 1
B. 2

A. 588
B. 888

A. 100
B. 120

A. She called to him, he did not answer, but
B. She calledto him but he did not answer
C. But he did not answer, she called to him