A 10-Kg Piece of Aluminum Sits at the Bottom of a Lake

Multiple Choice

A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. Which one has the greater buoyant force on it?

A) Both have the same buoyant force.
B) the lead
C) the aluminum
D) It cannot be determined without knowing their volumes.