EASY GRAMMER QUESTION!! PLEASE ANSWER!!!

Which sentence is correctly punctuated? (11 points)


A)A barking dog is perhaps the biggest annoyance; however, few dog owners train their dogs to hush.

B)Along came the cat in pouncing position to launch at the bird: clueless of its surroundings.

C)There was never a threat before as striking as this one but for the one on March 1st.

D)Taking lessons from the predator: the prey is the most important thing.

Respuesta :

Sentence A appears to be the only correctly written sentence. 
I think that it is definitely not B or C, but if I were to choose between A and D, I would definitely choose A.