【单选题】
在VB语言中,下列常量说明语句正确的是()。
A、Const PI As Single=3.14
B、Dim a As Integer=15
C、Const PI=3.14 As single
D、Dim a=15 As Integer
A、Const PI As Single=3.14
B、Dim a As Integer=15
C、Const PI=3.14 As single
D、Dim a=15 As Integer