Set M contains number that satisfy the condition that, if integer x is in the set then x + 1 will also be in the set M. If -4 is one value in the set, which of the following values must also be present in the set M? I) -6 II) -2 III) 2	Choose the correct choice from the following answers:
A) I only  B) II only  C) I and II only  D) II and III only  E) I, II and III
Since -4 is in the set, then the set must also include -3, -2, -1, 0, 1, 2, 3, 4, etc...   Depending on whether -4 is the starting element in the set or not, we can have -6...or not.   The answer is II and III only.
<result>D</result>
Set M contains number that satisfy the condition that, if integer x is in the set then x + 1 will also be in the set M. If -4 is one value in the set, which of the following values must also be present in the set M? I) -6 II) -2 III) 2