Find the next number in the series below ?
298 209 129 58 ?  Choose the correct choice from the following: A) 5 B) 10 C) -4 D) -10 E) 0
-4   -4   298 less 209 is 89   209 less 129 is 80   129 less 58 is 71   58 less -4 is 62   The result of each subsequent equation is 9 less than the previous one.
<result>C</result>
Find the next number in the series below ?
298 209 129 58 ?