Which of these is a base only?

II A) .-OH B) -OH O C H2N-C-H CH3 O 11 ) C H-C-H H-C-NH CH3 o C-o c) -0 D) -OH E) H C H3C-(-NH2 H-C-H Hc-c-NH-CH CH3 CH2 HC-NH CH2 OH