A 35-year-old with Addison's disease (primary adrenal insufficiency) on long-term steroid replacement attends with symptoms suggestive of adrenal crisis (vomiting, hypotension). What is the immediate step in management?AGive IV normal saline and IV hydrocortisoneBGive IV 5% dextrose infusion onlyCObtain cortisol levels and wait for results before treatmentDAdminister fludrocortisone aloneEGive a single dose of intramuscular hydrocortisone and dischargeCheck my answer