import arithmetic as a def multiply(num1, num2): product = num1 * num2 result = a.add(product, product) return result def main(): num1 = 4 num2 = 3 answer = multiply(num1, num2) print("The answer is", answer) if __name__ == "__main__": main() arithmetic module: def add(x, y): z = x + y return z

Refer to Code Example 4-4: The add() function is called by

	a.	the multiply() function
	b.	the result statement
	c.	the arithmetic module
	d.	the main() function