This method covers sampling from four types of mixtures which are _____, _____, _____, and _____.

• A. Stationary mixers, paving mixers, revolving drum mixers, and open top mixers
• B. Stationary mixers, drum mixers, tilt mixers, and open top mixers
• C. Paving mixers, revolving drum mixers, batch mixers, and open top mixers
• D. Stationary mixers, revolving drum mixers, bagged concrete, and open top mixers

Answer: (A)