VB.NET nullable integer assign nothing through If statement may result nothing=0 issue if another return variable is not nullable.

NullableInteger.vb

Imports System
				
Public Module Module1
	Public Sub Main()
		Dim a as Integer? = Nothing
		Dim b as Integer = 5
		Dim c as Integer? = 5
		a = If(1=1, nothing, b)
		Console.WriteLine(a) ' 0
		a = Nothing
		Console.WriteLine(a) ' nothing
		a = If(1=1, nothing, c)
		Console.WriteLine(a) ' nothing
	End Sub
End Module