The Three Branched Chain Amino Acids (Valine, Leucine and Isoleucine)

The three branched chain amino acids (valine, leucine and isoleucine)

A) share a common enzyme for the oxidative decarboxylation of their alpha-keto analogues.
B) share a common synthetic pathway in man.
C) all give rise to the same end products to feed into the tricarboxylic acid cycle.
D) cannot be transaminated.
E) must be deaminated by L-amino acid oxidase.