Question

Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion.

9.7 g + 67.8 mg

A.
The values can be added after making a conversion of units because they both measure mass.

B.
The values can be added without making a conversion of units because they both measure mass.

C.
The values cannot be added because one is measuring mass and the other is measuring capacity.

D.
The values cannot be added because one is measuring mass and the other is measuring volume.