What Was the Purpose of the National Resources Planning Board

What was the purpose of the National Resources Planning Board?

A) It facilitated the federal government's programs to protect national forests.
B) It facilitated state and regional management of water, soil, timber, and minerals.
C) It facilitated the storage of supplies in case there was a world war.
D) It facilitated local construction of vital railways and roads.
E) It facilitated the development of federal, state, and local mining controls.