Quote
Exactly one sentence one this card is true.

don't understand this sentence (2x one). But yes, I'd say one sentence of these 3 is correct => sentence A has 5 words.
Sentence B does not have 2 verbs.
So statement c is true.
Kiya

Exactly one sentence on this card is true?

Errh, correction: Statement c is WRONG: there are 2 correct statements on this cards (A+C) >1 => untrue