参考答案：C

解析：[听力原文]
W：I was in the gas station at 1：00．How did I miss you
M：I got there at quarter past 12:00 and waited a while．But I guess I left before you got there．
Q：When did the man probably leave the gas station

[详解] 对话中女士是一点钟到的加油站，而男士是 12点—刻到的加油站，只等了一会儿就走了，所以由此可知他至少是12点一刻后才离开加油站的。