Teacher: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".
Teacher: Now, understand the problem? Solve this instance: To heal properly, the bandage had to be removed from the cut and replaced with ointment, as the _ was ineffective in curing the infection. (A) bandage (B) ointment
Student:
A