Why Are Carrots Said to Be Good for You

Multiple Choice

Why are carrots said to be good for you?

A) That is just an old wive's tale.
B) Beta-carotene,the orange pigment in carrots,is a precursor to Vitamin A and retinal,the cofactor in photopigments.
C) Beta-carotene,the orange pigment in carrots,is necessary to form lens proteins.
D) Carrots have large amounts of glutamate,a neurotransmitter that activates sensory neurons.