Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?	Pick one:  A) 14  B) 15  C) 17  D) 19  E) 11
14   14   In this series, each number is repeated, then 13 is subtracted to arrive at the next number.
<result>A</result>
Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?