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".

At the shoe store, Natalie bought Monica a new pair of Dr. Martens boots for her birthday. _ was excited to get the boots as a present. (A) Natalie (B) Monica
Output:
B