執行下列Visual Basic 程式片段後，所印出的結果為何？
(A)2
(B)11
(C)19
(D)28Private Sub Form_Activate( )Call S1(2)End SubSub S1( ByVal X As Integer )Call S2 ( X , X , X )Print XEnd SubSub S2(ByVal A As Integer , B As Integer , ByRef C As Integer )A = A + 1 : B = B + 2 : C = A + B * CEnd Sub