Code example 4-2 def get_volume(width, height, length=2): volume = width * height * length return volume def main(): l = 3 w = 4 h = 5 v = get_volume(l, w, h) print(v) if __name__ == "__main__": main() refer to code example 4-2: if you add the following code to the end of the main() method, what does it print to the console? print(get_volume(10, 2)) select one: a. 40 b. 20 c. 60 d. nothing, it causes an error