Read the following context and choose the best option to answer the question.
Context: She needed to rest somehow , but most important was making sure the Hunter would be ready to go , and he gave her a job to do . She wandered over to the door into the lab and locked it . After that , she wandered back to the closet X had nodded at , and started rifling threw things .
Question: What may have been the reason she locked the door ?
Options: 
A. So she could go to sleep without being caught by Hunter .
B. So she could be alone with Hunter and not be disturbed .
C. So she and X could rifle through the closet .
D. So no one would see her going through the storage spaces .


D