During the Examination of a Patient in Her Third Trimester

During the examination of a patient in her third trimester of pregnancy,the nurse notices that the patient's thyroid gland is slightly enlarged.No enlargement had been noted previously.The nurse suspects that:

A) she has an iodine deficiency.
B) she is exhibiting early signs of goitre.
C) this is a normal finding during pregnancy.
D) further tests are needed for possible thyroid cancer.