A fishing boat accidentally releases 3.0 barrels of diesel into the ocean. Each barrel holds 42 gallons. If the layer of diesel in the ocean is 2.5 x 102 nm thick, how many square meters does this layer cover?

a. cannot be calculated b. 1.9 x 10^6 m^2

c. 1.9 x 10^-3 m^2

d. 1.9 x 10^7 m^2