A: Good afternoon, Doctor Huang.

B: Good afternoon, young man.     56   

A: I have a bad cold. I cough now and then.         

B:     57   

A: For two days. And I’m feeling terrible now.

B:     58   Oh, you have a fever, too.

A: Is it serious?

B:     59     You just need some medicine.

A: How often should I take the medicine?  

B: Three times a day.     60   

A: Thanks a lot. Bye!

足月新生儿，因胎心率每分钟>160次而以产钳助产，第二产程延长，Apgar评分3分。

引起该患儿发生皮下脂肪变硬的原因最可能是（）

A.感染导致机体缺氧

B.窒息导致棕色脂肪产热过程受抑制

C.饥饿导致机体产热减少

D.寒冷导致皮下脂肪硬化

E.以上都不是