Answer:
The correct answer is B,false
Step-by-step explanation:
Opportunity cost is naturally the cost of alternative forgone,that is the benefits ignored as a result of taking a particular course of action.
Obviously,the opportunity cost of the bouffe to Betty is the practicing calculus problems for her math examination that she could not partake in.
The opportunity cost would only be the practicing session missed if Betty was able to pass the examination,otherwise the opportunity becomes bigger if she fails the exam to include the costs of paying and preparing for another examination