下面的程序,若想运行结果是Best Wishes to you!,则划线处代码可能是( )s="Happy National Day!"m=____if m=="Happy": print("Happy to you!")elif m=="National": print("Best Wishes to you!")else: print("It's a fine Day!")
A . s[6:13]
B . s[7:14]
C . s[-6:-14:-1]
D . s[-13:-5:1]
答案:D