(1,2,3)*3的执行结果是哪个?

(1,2,3)*3的执行结果是哪个?

A.(1,2,3,1,2,3,1,2,3)

B.(1,2,3)(1,2,3)(1,2,3)

C.(3,6,9)

D.出错

正确答案是A