What type of sentence is "The result is that most of our so-called reasoning consists in f

What type of sentence is "The result is that most of our so-called reasoning consists in finding arguments for going on believing as we already do."？

A．A simple sentence.

B．A coordinate sentence.

C．A complex sentence.

D．None of the above.

请帮忙给出正确答案和分析，谢谢！