I went to Zhejiang         .          [ ]

A. today        

B. tomorrow

C. last year

下面程序执行后的输出结果为( )。 public class fun { public static void main(String args[]) { String greets="How are you!"; String s=greets.substring(0,3); System.out.println(S); } }

A．How

B．ar

C．you

D．how ate you!