Identify the root in the English word undeniability, assuming that a proper morphological analysis has been made $($where each morpheme you isolate contributes a component of meaning to the composite word$).($Don$\text{'}$t be unduly influenced by English spelling variations or minor variations in the pronunciations of some morphemes when affixes are attached to them.$)$

a$)$ deniable b$)$ undeny c$)$ deny

d$)$ ability e$)$ unde