Two unknown minerals samples AandB are rubbed against each other. Mineral A scratches Mineral B What can you infer about the minerals

Question

A is harder tha B
B is harder than A
A is more dense than B
B is more dense than A

Answer 1

If mineral A scratches mineral B, you can infer that:

A is harder than B.

In the context of mineral hardness, the ability of one mineral to scratch another is a common way to determine their relative hardness based on Mohs hardness scale, where harder minerals can scratch softer ones. The density of the minerals cannot be inferred from the given information about scratching.