10. 下列程序段输出的结果是_______。public class Test{ public static void main(String args[]){ int x=1,a=0,b=0; switch(x){ case 0:b++; case 1:++a; case 2:a++; ++b; } System.out.println(
A. a=2,b=1
B. a=1,b=0
C. a=1,b=1
D. a=0,b=0
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