To convert a proper Likert scale from a generator of interval data to a generator of ratio data, you could

	A.	Increase the number of options from five to 10
	B.	Change the number of options to an even number
	C.	Add a zero to the scale
	D.	Add a zero to the scale and change the instructions to indicate that zero represents the absence of agreement and that the maximum value represents complete agreement
	E.	All of the above
	F.	None of the above