92. Baking for winter holidays is a tradition that may have a sound medical basis. In midwinter, when days are short, many people suffer from a specific type of seasonal depression caused by lack of sunlight. Carbohydrates, both sugars and starches, boost the brain’s levels of serotonin, a neurotransmitter that improves the mood. In this respect, carbohydrates act on the brain in the same way as some antidepressants. Thus, eating holiday cookies may provide an effective form of self-prescribed medication.

Which one of the following can be properly inferred from the passage?

A.
Seasonal depression is one of the most easily treated forms of depression.

B.
Lack of sunlight lowers the level of serotonin in the brain.

C.
People are more likely to be depressed in midwinter than at other times of the year.

D.
Some antidepressants act by changing the brain’s level of serotonin.

E.
Raising the level of neurotransmitters in the brain effectively relieves depression.

E，把原文的信息扩大范围了，原文说的是a neurotransmitter， E中变成了所有neurotransmitters。

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我选的B，我认为原文 depression caused by lack of sunlight，………………boost the brain’s levels of serotonin,所以，Lack of sunlight lowers the level of serotonin in the brain.

看过正确选项后，我的想法是：

D.
Some antidepressants act by changing the brain’s level of serotonin.

其正确的理由:

1）表现了原文中最直接的关系：antidepressants 与level of serotonin的关系

2）Some在这里使结论不会绝对化，符合properly inferred

不知道我这样的理解是否正确？同时，B选项有致命的错误么？

谢谢！