If Tyrosine Becomes a Conditionally Essential Amino Acid in the Body

If tyrosine becomes a conditionally essential amino acid in the body, which of the following statements is true?

A) Phenylalanine is produced using tyrosine and should be supplied in adequate quantities.
B) Tyrosine should be taken in through the diet as the body is unable to produce it.
C) The excess absorption of phenylalanine prevents the absorption of tyrosine by the body.
D) Tyrosine is produced in excess by the body, and its intake through the diet should be limited.
E) Tyrosine is not required by the body for the synthesis of other essential amino acids.