Which Statement Is NOT True About the Thyroid Gland

Which statement is NOT true about the thyroid gland?

A) It measures approximately 4 to 6 cm in length, 2 to 3 cm in anteroposterior (AP) diameter, and 1.5 to 2 cm in width.
B) In cross-section, it is outlined anteriorly by the longus colli muscle and the internal jugular vein.
C) The isthmus measures approximately 2 to 6 mm in AP diameter.
D) It plays a major role in growth and development and regulates basal metabolism through the synthesis, storage, and secretion of thyroid hormones.