The Chinese people will never forget 9 a.m. on Oct 12, 2005, a most exciting and inspiring moment , _____ ShenZhou VI was launched ,_____is always making me thinking of_____ I can do more for my homeland.

　 A. when; which; how　　　　　　　　　　 B. which; that ; that

　 C. when; as; what;　　　　　　　　　　　 D. that; which; which