What Instruction Should the Nurse Provide About the Administration of a Buffered

What instruction should the nurse provide about the administration of a buffered, powdered formulation of didanosine (Videx) ?

A) "Mix the powder with orange juice."
B) "Stir the powder into 4 ounces of water and drink it immediately."
C) "Prepare the solution at least 30 minutes before administration."
D) "Mix the solution in the morning, refrigerate it, and take it in the evening."