执行下列程序后,鼠标单击窗体,输出结果为( )。 privAtE suB Form_CliCk() print“CliCk”; EnD suB privAtE suB Form_mousEDownButtonAs intEgEr,shiFt_ As intEgEr,xAs singlE,yAs singlE) print “Donw” EnD suB privAtE suB Form_mousEupButtonAs intEgEr,shiFt_ As intEgEr,xAs singlE,yAs singlE) print“up” EnD suB A、j2DE B. j2sE C. j2mE D、y2EE