What is the sum of the multiples of 4 between 53 and 145 inclusive?
Select the correct option
A) 2000
B) 2200
C) 2300
D) 2450
E) 2500

Rationale: "the fastest way in an ap is to find the average and multiply with total integers . . between 53 and 145 , the smallest multiple of 4 is 56 and largest = 144 . . average = ( 56 + 144 ) / 2 = 100 . . total numbers = ( 144 - 56 ) / 4 + 1 = 22 + 1 = 23 . . sum = 23 * 100 = 2300 ans c"
Answer: C