有以下程序#include main(){ char *s="12134"; int k=0, a=0 ; while( s[ k +1 ] ) { k++; if ( k % 2 ==0 ) { a = a + ( s[ k ] - '0' +1 ) ; continue; } a = a + ( s[ k ] - '0' ); } printf (" k=%d a=%d\n", k, a );}程序运行后的输出结果是( )
A. k=5 a=15
B. k=4 a=12
C. k=6 a=11
D. k=3 a=14