A soil report has to be made for a soil deposit. Grainsize distribution (GSD) and Hydrometer Analysis for the soil deposit are performed in the lab. Total weight taken for analysis is 500 grams. The weight of material in each sieve and their corresponding no.

(a) 2mm - 50.56gm
(b) 1mm - 65.45gm
(c) 600microns - 0.34gm
(d) 425microns - 0.23gm
(e) 212microns - 48.73gm
(f) 150microns - 170.99gm
(g) 75microns - 130.45gm

What is the percentage of Gravels in the soil?

A) 10.0%
B) 15.0%
C) 20.0%
D) 25.0%