Which of the Following Statements Concerning Arginine Is True

Multiple Choice

Which of the following statements concerning arginine is true ?

A) Arginine is only marginally an essential amino acid, since it is made in the urea cycle.
B) Aspartic acid is the main amino acid precursor for the carbon chain in arginine.
C) Lysine could substitute for arginine as a dietary source for arginine.
D) Arginine is only essential in adults.