下面程序段,运行后的结果是

Private Sub Command1_Click

D．im b%(1 To 4), i%, t#

F．or i=1 To 4

b(i) =i

Next

t=Tof(b() )

Print "t="; t,

E．nd Sub

F．unction Tof(a() As Integer)

D．im t#, i%

t=1

F．or i=2 To UBound(a)

t=t  a(i)

Next

Tof=t

E．nd Function

A．t=18

B．t=24

C．t=30

D．t=32