[单选题]
The Q value for a pasq833,kq. ehw6bfds vks*t( w rticular reaction is -2.4 MeV, and the reaction's thres2 r3rahsq 6uk)m/jc,frck4. uhold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the c. ,2) kfj3ma/6rq rrsk4 uhcustationary target nucleus?