Some international firms spend much time in college recruiting because

A、they are looking for candidates who already have such qualifications as language proficiency and overseas experience.;
B、they are looking for young, naive individuals who are less likely to experience stress when leaving their home country.;
C、college students are more likely to have characteristics such as adaptability, flexibility and empathy than older persons.;
D、students lack negative experiences that would influence their decisions about going abroad for business.