A graduated cylinder contains 49.2 mL of water. A 51.3-g piece of metal is carefully dropped into the cylinder. When the metal is completely covered with water, the water rises to the 56.1 mL mark. What is the density of the metal?

a)6.9 mL
b)6.9 g/mL
c)7.43 g/mL
d) 0.13 g/mL