The Nurse Can Assess Her Patient's Ability to Read and Comprehend

The nurse can assess her patient's ability to read and comprehend written instructions by doing which of the following?

A) Asking the patient, "Did you graduate from high school?"
B) Giving the patient a printed instruction sheet and saying, "Some people have difficulty with written instructions. Others find them helpful. Would these be helpful to you?"
C) Asking the patient, "Are you able to read?"
D) Giving the patient some printed materials and saying, "After you have read this, I'll ask you some questions about what's in them, to see if you've learned it."