Ray has six hours before he goes to bed on a school night. he plans to spend an hour surfing the internet, two hours playing his favorite game, two hours watching tv, and one hour doing his homework. however, some of the math problems in his homework are extremely difficult, and it will take him more than two hours to finish them. he knows his teacher won’t give him any credit for the work unless it's completely finished, and it's important that he get a good grade in the class. which of these options for dealing with this situation are a trade-off of ray’s time?

a. he will spend only one hour on homework and leave out what he can’t finish.
b. he will spend one extra hour on homework and give up watching tv.
c. he will finish his homework while he is watching tv.
d. he will play his favorite game for one hour and do homework for two hours.
e. he will ask his brother to him with his homework.