A return address for the sender should always be placed in the ________ corner in the event the letter must be returned to the sender.

Iodine

A) Can be synthesized in the body from tyrosine B) Deficiency occurs mainly in coastal regions C) Is primarily located in the thyroid gland in the body D) Deficiency never occurs due to the widespread use of iodized salt

The lead apron should be sterilized after use

Indicate whether the statement is true or false