[单选]  #include      constintM=20;      voidmain()      {          inti,c2,c3,c5;          c2=c3=c5=0;          for(i=1;i<=M;i++){              if(i%2==0)c2++;              if(i%3==0)c3++;              if(i%5==0)c5++;          }          printf(“%d%d%dn“,c2,c3,c5);      }