A 2-in. diameter cylinder is floating vertically in seawater with 75% of its volume submerged. If the specific gravity of seawater is 1.03, the specific weight (lb/cu ft) of the cylinder is most nearly:

a) 48.2 lb/ft3
b) 64.2 lb/ft3
c) 83.2 lb/ft3
d) 85.7 lb/ft3