What can we infer about the speaker's feelings from the text below?
'I have been studying for the math exam for three hours. I still don't understand the subject. My friend Ali explained it twice, but it is no use. I think I will never learn it.'
A)She is feeling hopeful because she studied for three hours.
B)She is feeling hopeless.
C)She is grateful to her friend for explaining.
D)She is angry at her friend for not explaining well.