What is the news item mainly about？A．The work of the two Nobel laureates sheds light on th

What is the news item mainly about？

A．The work of the two Nobel laureates sheds light on the tiny building blocks of life-cells.

B．The work of the three Nobel laureates sheds light on the huge building blocks of life-cells.

C．The work of the three Nobel laureates sheds light on the tiny building blocks of life-cells.

D．The work of the three doctors sheds light on the tiny building blocks of life-cells.

请帮忙给出正确答案和分析，谢谢！