Humans Often Appear Irrational When You Look at Results of Decision-Making

Humans often appear irrational when you look at results of decision-making research. What explanation for this tendency is given by evolutionary theorists?

A) Cognitive research formulates problems that are unrelated to the problems that the human mind has evolved to deal with.
B) Human research employs heuristics and algorithms rather than deductive reasoning.
C) Most research compares humans to other animals, and other animals have more highly developed instinctive decision-making processes.
D) Most decision-making research involves numerical problems, something that our ancestors did not face.