Please help!

1.) What is the unit for mass?

A.) g

B.) ml

C.) g/ml

D.) cm^3

2.) What is the unit for measuring the volume of liquids?

A.) g

B.) ml

C.) g/ml

D.) cm^3

3.) What is the unit for measuring the volume of solids?

A.) g

B.) ml

C.) g/ml

D.) cm^3

4.) What is the unit for measuring density?

A.) g

B.) ml

C.) g/ml

D.) cm^3