单项选择题

A.汽柴油爆震都是因为油品容易自燃
B.汽油爆震是因为自燃点低,柴油爆震是因为自燃点高
C.汽油爆震是因为不易自燃,柴油爆震是因为容易自燃
D.汽油爆震是因为太易自燃,柴油爆震是因为不易自燃