Which one among the following was the objective of starting the Nirmal Gram puraskar incentive scheme?

Options

A. 1 Encourage penchayati Raj Institution to take up sanitation promotion for attaining 100% open defecation - free environment
B. 2 Enable rural schools to provide safe and clean drinking water for children
C. 3 Provide toilet to all rural households
D. 4 Provide financial assistance to states to install water purification system in rural schools