Look at this series: 83, 73, 93, 63, __, 93, 43, ... What number should fill the blank?
Choose the correct choice from the following options:
A) 55
B) 59
C) 52
D) 53
E) 51
D   53   This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
<result>D</result>
Look at this series: 83, 73, 93, 63, __, 93, 43, ... What number should fill the blank?