He seems like he 's mentally impaired somehow . As I ' m going through the spiel , asking him what size what bread what sandwich what cheese , my coworker ( we 'll call her Smash ) mouths to me , " HE 'S SO DRUNK ! " Ahh , that 's what it was .
Why does the person come off as mentally impaired ?
Pick the best answer from the following options:
A. They are mentally impaired .
B. They are high on something .
C. They drank too much
D. They have a low IQ .


C