Which statement correctly describes the energy use in Standard Proctor vs Modified Proctor tests?

Which statement correctly describes the energy use in Standard Proctor vs Modified Proctor tests?

• A. The Standard Proctor uses higher energy to determine OMC and MDD; Modified uses lower energy.
• B. The Standard Proctor uses higher energy to determine OMC and MDD; Modified uses higher energy.
• C. The Standard Proctor uses lower energy to determine OMC and MDD; Modified uses lower energy and yields higher MDD.
• D. The Standard Proctor uses lower energy to determine OMC and MDD; Modified uses higher energy and yields higher MDD.

Answer: (D)