When margarine was developed, it was decided to supplement it with vitamin A, while butter had never been supplemented with vitamin A. Why was margarine supplemented?
A.	The technology had finally been developed to determine that spreads were a poor source of vitamin A.
B.	Butter is a good source of vitamin A, while margarine normally contains no or little vitamin A.
C.	It was found that excessive use of butter depleted vitamin A status from the body.
D.	none of the above.
Answer:B
When margarine was developed, it was decided to supplement it with vitamin A, while butter had never been supplemented with vitamin A. Why was margarine supplemented?
A.	The technology had finally been developed to determine that spreads were a poor source of vitamin A. B.	Butter is a good source of vitamin A, while margarine normally contains no or little vitamin A. C.	It was found that excessive use of butter depleted vitamin A status from the body. D.	none of the above.