Regarding payment,we only accept L/C______by draft at sight.

Regarding payment,we only accept L/C______by draft at sight.
A、confirmed
B、irrevocable
C、available
D、acceptable
【正确答案】：C
【题目解析】：句意：关于支付方式，我方只接受信用证，凭即期汇票支付。 available by draft at sight表示“凭即期汇票支付”，是固定搭配。