Which of the Following Statements Is True with Regard to Group

Which of the following statements is true with regard to group decision-making biases?

A) Decisions made by groups seldom show the types of biases that are demonstrated by individual decision makers.
B) Decisions made by groups seldom show the types of biases that are demonstrated by individual decision makers when the demonstrability of a solution is low.
C) Group members tend to serve an error-checking function when the demonstrability of a solution is high.
D) Group members tend to serve an error-checking function when the demonstrability of a solution is low.