单项选择题
设a="Microsoft Visual Basic",则以下使变量b的值为“Visual Basic”的语句是()
A.b=Left(a,10) B.b=Mid(a,10) C.b=Right(a,10) D.b=Mid(a,11,10)
A.Microsoft Visual B.Microsoft C.Basic D.5
A.1 B.True C.False D.2