Which of the following is a primary survey component in emergency medicine?

A. Airway assessment: Airway, Breathing, Circulation, Disability, and Exposure (ABCDE) form the primary survey in emergency care to quickly identify and manage life-threatening conditions. B. Determining Tetanus status: Important, but part of the secondary survey, not the primary. C. Social determinants of health: Relevant in long-term care planning, but not urgent in the initial emergency assessment. D. Documenting allergies: Also part of the secondary survey (SAMPLE history) unless anaphylaxis is suspected.