Select the option that expresses the given sentence in active voice.
Four grams of sodium chloride was added to the mixture by the research team.

A

The research team added the mixture to four grams of sodium chloride.

B

Four grams of sodium chloride added the mixture to the research team.

C

The research team added four grams of sodium chloride to the mixture.

D

The mixture added four grams of sodium chloride to the research team.