如果当x=-2时，代数式ax⁵+bx³+cx-5的值是-7，那么x=2时，该代数式的值是(  )

实现上述功能的VB程序如下，但加框处代码有错误，请改正。

  Dim a(1 To 15) As Integer

Dim n As Integer 'n为计数器

Dim key As Integer 'key存放筛选条件的数字部分

Dim f As String 'f存放筛选天健的符号部分：大于号或者小于号

Private Sub FormLoad()

Randomize

For i = 1 To 15

a(i) = Int(Rnd * 100)

List1.AddItem Str(a(i))

Next i

 End Sub

Private Sub Command1Click()

Dim c As Integer

Dim st As String

n = 0

c = Len(st)

f = Mid(st, 1, 1)

If f = "<" Then Se2 '调用过程

If f = ">" Then Se1 '调用过程

Label2.Caption = "有" + Str(n) + "个筛选结果"

End Sub

Private Sub Se1() '筛选过程1

For i = 1 To 15

   If a(i) > key Then

      List2.AddItem Str(a(i))

      n = n + 1

   End If

Next i

End Sub

Private Sub Se2() '筛选过程2

For i = 1 To 15

List2.AddItem Str(a(i))

       n = n + 1

    End If

Next i

End Sub

设a₁,a₂,a₃ 为正数，$E=\frac{a_1{a}_2}{a_3}+\frac{a_2{a}_3}{a_1}+\frac{a_1{a}_3}{a_2}$  ，F=a₁+a₂+a₃ ，则E，F的大小关系是(    )