[单选题]

判断char型变量c1是否为小写字母的正确表达式为()A.'a'<=c 1<='z'B.(c1>=a)||(c1<=z)C.('a'=>c1|
判断char型变量c1是否为小写字母的正确表达式为( )
A．'a'＜=c 1＜='z'
B．(c1＞=a)||(c1＜=z)
C．('a'=＞c1||('z'＜=c1)
D．(c1＞='a')&&(c1＜='z')

判断char型变量c1是否为小写字母的正确表达式为()A.'a'<=c 1<='z'B.(c1>=a)||(c1<=z)C.('a'=>c1|判断char型变量c1是否为小写字母的正确表达式为( )A．'a'＜=c 1＜='z'B．(c1＞=a)||(c1＜=z)C．('a'=＞c1||('z'＜=c1)D．(c1＞='a')&&(c1＜='z')