Which of the following statements is/are correct about ‘Eco San’ toilets?

a. It is a sustainable system for handling human excreta or faecal matter by using dry ‘composting toilets’.
b. These are very useful for the rural areas where sewer systems are not possible.
c. These toilets are hygienic, efficient, practical and most effective for the disposal of human waste.

• A

  a and b

• B

  b and c

• C

  a and c

• D

  a, b and c