Matias spent 2 hours studying for an exam, and he received an A on the exam. Normally, he would have spent that time watching TV instead of studying. Matias figures he could have made a B after studying only 1 hours, but he really wanted an A. What is Matias ’s marginal cost in terms of TV viewing to move from a B to an A on the exam 1) 1 hour 2) 8 hours 3) 4 hours 4) 8$