问题详情

In paragraph 3, the author mentions all of the following characteristics of the sun EXCEPT:
A．The photosphere is the visible layer of the sun where energy escapes into space as sunlight.
B．Nuclear fusion takes place in the sun"s core and travels outwards through a number of different layers.
C．The photosphere, which is 100 km thick, has a lower temperature than the sun"s outer atmosphere.
D．The sun has a magnetic core made of liquid iron that is kept in constant motion by the sun"s rotation.请帮忙给出正确答案和分析，谢谢！