The four inequalities have the following solutions:
A. [tex]c+14<24 \iff c<10[/tex]
B. [tex]c+18\geq 24 \iff c\geq 6[/tex]
C. [tex]c+18>24 \iff c>6[/tex]
D. [tex]c+14\leq 24 \iff c\leq 10[/tex]
Try to match these conditions with your set. For example, option A is surely wrong, because it claims that we only want number which are less than 10, but 10 itself is in our set. Similarly, option B is wrong, because it only allows numbers greater than or equal to 6, but our set contains 5.
Applying this logic, try to see if the answer is C or D!
