Choose the sentence that correctly replaces the underlined word with a conjunctive adverb.
I hate broccoli, so I did not eat it. 
Question 17 options:

I hate broccoli; therefore I did not eat it. 

I hate broccoli therefore, I did not eat it. 

I hate broccoli; therefore, I did not eat it. 

I hate broccoli; however, I did not eat it.