Set M contains number that satisfy the condition that, if integer x is in the set then x + 5 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) -9 II) 1 III) 6  Select the correct option:
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 1, 6, 11, 16, etc...   Depending on whether -4 is the starting element in the set or not, we can have -9...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 + 5 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) -9 II) 1 III) 6