How is Grendel characterized in this excerpt?

The complete question includes an excerpt and these choices:"I was safe in my tree, and the men who fought were nothing to me, except of course that they talked in something akin to my language, which meant that we were, incredibly, related. I was sickened, if only at the waste of it: all they killed-cows, horses, men-they left to rot or burn. I sacked all I could and tried to store it, but my mother would growl and make faces because of the stink." a. He is weak and easily disgusted by dead animals. b. He is careful and respectful of animal life. c. He is cruel and disobedient to his mother’s wishes. d. He is considerate and mindful of the fighting men The correct answer is b. A. is wrong as he managed to store the remains of the dead animals by himself, c. is wrong as he is considerate of his mother's reactions and wishes, d. is wrong as he explicitly says he he is sickened by the fighting men's actions.