In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Q: Problem: find a number such that it exceeds 18 by 3 times the number by which it is less than 86 ?
Options: a ) 67 , b ) 68 , c ) 69 , d ) 70 , e ) 71
A:
c