Final answer:
Patient 3 was in the diabetic range.
Step-by-step explanation:
To determine which patients tested were in the diabetic range, we need to look for clues in the given information. Patient 3 is mentioned multiple times in the text, so we can conclude that patient 3 was in the diabetic range. Patients 4 and 5 are not specifically mentioned in relation to diabetes, so we cannot determine whether they were in the diabetic range based on the given information. Therefore, the answer to the question is D) patient 3.