Below are five statements. Only one is false. Which is it?

a) Like, in I, is not a verb; it‘s a preposition.
b) Just, in II, is not an adjective.
c) Blue, in III, has an informal meaning: (of a person or mood) melancholy, sad, or depressed.
d) Blessed, in V, is the past tense of the verb to bless.
e) Dark, in V, is an adjective.