In Excel, we have two computation environments. One is Excel spreadsheet; the other is called ___ There is a program. Find the errors and explain why they are wrong Option Explicit Public Function my_proc () Return_value = 5 End Function End Sub There is a program. Find the errors and explain why they are wrong. Option Explicit Sub Test(5) a = 3 Dim a, b as Double Dim c as Integer Dim d() as Boolean a = i * a a = b c = a 15 = a Cells (1, 1)-a 17 = Cells (2, 1) c = Cells((1, 1) + (2, 2))/2 b = Cells(a1) + Cells(b1) + Cells(c1) Msgbox "ok" 3