How many multiples of 5 are there between 1 and 100 (both are inclusive)?  Select the correct option:
A) 1.2
B) 20.8
C) 2.3
D) 6.7
E) 8.2

Rationale: "the answer is ( 100 - 1 ) / 5 + 1 = 20.8 answer is b"
Answer: B