human
Question:A 27-year-old man presents to the emergency department. He was brought in by staff from the homeless shelter when they found him unresponsive. The patient is a known IV drug abuser but otherwise has an unknown past medical history. He currently attends a methadone clinic. His temperature is 99.5°F (37.5°C), blood pressure is 97/48 mmHg, pulse is 140/min, respirations are 29/min, and oxygen saturation is 98% on room air. Initial laboratory values are shown below.

Serum:
Na+: 139 mEq/L
Cl-: 100 mEq/L
K+: 6.3 mEq/L
HCO3-: 17 mEq/L
Glucose: 589 mg/dL

The patient is given treatment. After treatment, his temperature is 99.5°F (37.5°C), blood pressure is 117/78 mmHg, pulse is 100/min, respirations are 23/min, and oxygen saturation is 98% on room air. His laboratory values are seen below.

Serum:
Na+: 139 mEq/L
Cl-: 100 mEq/L
K+: 4.3 mEq/L
HCO3-: 19 mEq/L
Glucose: 90 mg/dL

Which of the following is the best next step in management?
Options: (A Insulin, potassium, IV fluids, and glucose (B IV fluids only (C Oral rehydration (D Supportive therapy and close monitoring

Explanation: Let’s solve this step-by-step, referring to authoritative sources as needed. The patient is hypoglycemic and has low potassium levels, which suggests he is in diabetic ketoacidosis. The best next step in management is Insulin, potassium, IV fluids, and glucose. Oral rehydration is not appropriate in this case. Supportive therapy and close monitoring is also not the best option.
Instruction:Above is a medical question and a student-written answer, and I need you to help me extract the answer and output a single option from the four options.All you need to do is extracting the answer correctly(No matter the student's answer is right or not) and just give me the letter.The format of your answer must be:
Answer : A(orB,C,D)
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
Yes

--- Answer ---
grounded