You will be given a definition of a task first, then some input of the task.
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".

When I go shopping for hair products, I buy more shampoo than mousse because the _ makes my hair feel dirty. (A) shampoo (B) mousse
Output:
B