A 22-year-old presents 2 days after a bat exposure while sleeping, with an unrecognized bite. He has never been vaccinated for rabies. Regarding HRIG dosing, which is correct?A10 IU/kg into deltoidB20 IU/kg, infiltrated into wounds as much as anatomically feasible, remainder IM distant from vaccine siteC20 IU/kg all IM in same limb as vaccineD40 IU/kg divided equally between both deltoidsEHRIG is contraindicated if >24 hours since exposureCheck my answer