單項選擇題

class Bird { 
static void talk() { System.out.print("chirp "); } 
} 
class Parrot extends Bird { 
static void talk() { System.out.print("hello "); } 
public static void main(String [] args) { 
Bird [] birds = {new Bird(), new Parrot()}; 
for( Bird b : birds) 
b.talk(); 
} 
} 
結(jié)果為:() 

A.chirp chirp
B.chirp hello
C.hello hello
D.編譯失敗

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