Which of the Following Does Clay Provide to Soils That

Which of the following does clay provide to soils that enhance plant growth?

A) clay holds onto positively charged mineral ions needed for plant growth
B) clay provides aeration to the soil providing oxygen for root growth
C) clay allows roots to more easily penetrate the soil
D) clay holds onto negatively charged mineral ions needed for plant growth
E) clay provides to soil all of these things that enhance plant growth