Which of the Following Is the Best Explanation for the Fact

Multiple Choice

Which of the following is the best explanation for the fact that most transduction pathways have multiple steps?

A) Most of the steps were already in place because they are steps in other pathways.
B) Multiple steps in a pathway require the least amount of ATP.
C) Multiple steps provide for greater possible amplification of a signal.
D) Each individual step can remove excess phosphate groups from the cytoplasm.
E) Each step can be activated by several G proteins simultaneously.