Which among the following statements is CORRECT? A.) According to Archimedes's principle, any body completely or partially submerged in a fluid is buoyed up by a force whose magnitude equals the weight of the body.   B.) According to Archimedes's principle, any body completely or partially submerged in a fluid is buoyed up by a force whose magnitude equals the weight of the fluid displaced by the body.   C.) The specific gravity of a substance is the ratio of its density to the density of hydrogen.   D.) Bernoulli's equation is actually a statement of conservation of mass.

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