Which sentence about the big hole on Oak Island is correct? A No money or gold has ever been found in the hole. B The hole caused people to become sick. C Many people became very wealthy after digging in the hole. D The hole was dug by pirates.

## Step 1
The problem is a multiple-choice question about the big hole on Oak Island. The question asks us to identify the correct statement among the given options.

## Step 2
The correct answer is option A, which states that no money or gold has ever been found in the hole. This is a well-known fact about the big hole on Oak Island.

## Step 3
The other options are not correct. There is no evidence to suggest that the hole caused people to become sick (option B), that many people became very wealthy after digging in the hole (option C), or that the hole was dug by pirates (option D).