python) 15. When you create a function that has no return/ return type, it automatically returns: a. True  b. False c. 0 d. None

What is casting a data type A.) Converting a variable into another   B.) Converting a variable's value into another type   C.) Changing the variables data type into another

def truth_value(integer):    """Convert an integer into a truth value."""    # Convert 0 into False and all other integers,    # including 1, into True    if integer == 0:        truth_value = False    else:        truth_value = True    return truth_value Now, write a function that goes in the opposite direction of the truth_value() function. This new function should convert a truth value into an integer. In particular, True should be converted into 1 and False into 0. Name the new function integer_0_or_1(). All you need to include below is your definition of the function integer_0_or_1(). It will be tested automatically against relevant inputs. So include your function and nothing more.

# Exercise 8: Create a function that takes the sum of three numbers and returns the value # Make sure to use the function and display the result # When you are done, get 3 numbers from a user and then print out the sum using your function