In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".
Example: Katrina gave Christine a stuffed animal for their birthday, but _ already had this one. (A) Katrina (B) Christine
Example solution: B
Example explanation: Since the blank is someone who received the gift and already had a stuffed animal, the answer must be "Christine".

Problem: After reading the book and watching the video I felt I had done everything to prepare for the test.  The _ was more time consuming to watch. (A) book (B) video

Solution: B