请选择DCBA7{*X8S2~2B3E/c --- _____ should I get my mom for Mother's Day? ---Why don't you get her a scarf.?2H'p)x.m8]
A. Who2H'p)x.m8]
B. What2H'p)x.m8]
C. When2H'p)x.m8]
D. How2H'p)x.m8]