以下能正确定义数据类型SystemInfo的代码是( )。
A.Type SystemInfo
DiskDrives As String*10
Memory As Long
End Type
B.Type SystemInfo
DiskDrives As String*10
Memory As Long
End SystemInfo
C.Type SystemInfo
DiskDrives String*10
Memory Long
End Type SystemInfo
D.Typedef SystemInfo
DiskDnves String*10
MemoryLong
End Type