The Causal and the Effectual - to Play with Both

Multiple Choice

The causal and the effectual - to play with both hands is a heading in the book. In other words:

A) that effectual and causal are like fire and water
B) that considering entrepreneurship to be a play with two hands is a fruitful approach
C) a person should employ all of his/her ability, not only parts of it
D) the two forms of logic complement one another - they are both necessary, just at different stages