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SECTION B: Answer ALL questions 21. Consider the following code snippet very well and answer the following questions.[8 marks] Dim result as integer Dim firstinput as integer Dim secondinput as integer Dim thirdinput as integer firstinput = txtfirstinput.text secondinput = txtsecondinput.text thirdinput = txtthirdinput.text a. Write the code for displaying the result after adding the contents of the first two textboxes. b. Write the code for displaying the result after calculating average of the contents of the three textboxes