Read the following excerpt from "the gift of the magi" and then pick the option below that best describes it.

jim stopped inside the door, as immovable as a setter at the scent of quail. his eyes were fixed upon della: and there was an expression in them that she could not read, and it terrified her. it was not anger, not surprise, not disapproval, not horror, not any of the sentiments that she had been prepared for. he simply stared at her fixedly with that peculiar expression on her face (406).
a. jim is looking that way because he realizes his gift is no longer for della.
b. jim is looking that way because della is not allowed to cut her hair without his approval.
c. jim's expression is probably very ordinary, and it's just della overreacting that makes her feel differently
d. none of the above.