问题

My father seems to have a natural gift _____ treating frostbites(冻伤)______ , he is able to cure it.[ ]
A: at; however serious a frostbite is
B: for; whatever serious a frostbite is
C: with; however a frostbite is serious
D: for; however serious a frostbite is
B: for; whatever serious a frostbite is
C: with; however a frostbite is serious
D: for; however serious a frostbite is
正确答案是: