Subject: mathqa
Question: when 242 is divided by a certain divisor the remainder obtained is 12 . when 698 is divided by the same divisor the remainder obtained is 16 . however , when the sum of the two numbers 242 and 698 is divided by the divisor , the remainder obtained is 10 . what is the value of the divisor ?
Option: 
A: none of these
B: 23
C: 13
D: 18
Answer: D