Correct the given sentence if necessary:
I have never tried chocolate and bacon together.
Adverbs of frequency, "never", are put directly before the main verb. When the main verb is preceded by an auxiliary (helping verb, 'have') verb, then the adverb is placed between the two.
The given sentence has the adverb of frequency, "never", placed between the auxiliary verb "have" and the main verb "tried". Hence the sentence requires no change and option A is correct.
Option B is incorrect because an adverb of frequency is not placed in the front; when it modifies a verb it must be placed close to that verb.
Option C is incorrect because the adverb is in between the phrase "chocolate... together", which is far away from the verb it modifies.
Option D is incorrect because the adverb is placed at the end, which isn't close to the verb it modifies.