To allegations that he sexually assaulted a 17-year-old girl in a recording studio in 2003, Sean Combs has submitted his first formal response. The rapper was sued in December by an unnamed woman, who said the star and two other men plied her with “copious amounts of drugs and alcohol” before taking turns raping her in a bathroom. In court papers filed on Tuesday, Combs denied the accusations and questioned the timing of the lawsuit.