What is the leastvalue of x. So that 23x57 is divisible by 3?  Select the correct option.
A) 2  B) 5  C) 1  D) 6  E) 7

Rationale: the sum of the digits of the number is divisible by 3 , then the number is divisible by 3 . 2 + 3 + x + 5 + 7 = 17 + x least value of x may be 1 therefore 17 + 1 = 18 is divisible by 3 . c
Answer: C