Which Biochemical Event Does Not Take Place Within During Thyroid

Multiple Choice

Which biochemical event does not take place within during thyroid hormone synthesis?

A) one monoiodotyrosine molecule combines with one diiodotyrosine molecule to form one triiodothyronine molecule.
B) two iodine molecules combine with one tyrosine molecule to form one diiodotyrosine molecule.
C) two diiodotyrosine molecules combine to form one molecule of thyroxine.
D) four iodine molecules combine with one tyrosine molecule to form one tetraiodothyronine molecule.
E) all of these answers.