a, b, c, and d are consecutive integers such that a < b < c < d.

**Quantity A**

The average (arithmetic mean) of a, b, c, and d

**Quantity B**

The average (arithmetic mean) of b and c

This is a question from Manhattan 5lb 3rd edition in Number Properties… My question is What are consecutive integers? If they are even spaced set then why can’t -1, 0, 1, 2 are consecutive integers?

What is the answer choice for this question?