—Can you speak English?

—Sorry, I _____.[ ]

A. needn't

B. mustn't

C. can't

D. may not

乙因违约而损失5000元，该项损失应如何承担 ( )

A．由乙自行负担

B．由甲承担

C．由甲乙平均分担

D．由甲承担主要责任，乙承担次要责任