A 75 year old woman is admitted after elective hip replacement. She is mobile with a frame on day one post operatively and has no contraindications to anticoagulation. What is the most appropriate venous thromboembolism prophylaxis strategy?APrescribe low molecular weight heparin and anti embolism stockingsBPrescribe aspirin alone for 7 daysCNo pharmacological prophylaxis is needed if mobileDFull dose rivaroxaban for 3 monthsEUse intermittent pneumatic compression onlyCheck my answer