What Would Be the Appropriate Interpretation for the Following Order

What would be the appropriate interpretation for the following order? Demerol 50 mg IM stat? Administer:_______________ A) Demerol 50 mg IM when needed B) Demerol 50 mg IM as desired C) Demerol 50 mg IM on call to OR D) Demerol 50 mg IM immediately