All of the Following Statements About Preparing a Patient for Intravenous

All of the following statements about preparing a patient for intravenous pyelography are true EXCEPT

A) the patient should be asked about possible allergies to iodine.
B) the patient should take a prescribed amount of electrolyte solution or other laxative.
C) the patient may eat no solid food starting the morning before the procedure.
D) the patient may have one cup of coffee on the morning of the test.
E) the patient should be asked about possible allergies to shellfish.