Though a vital natural resource, india's ganges river is thought to be seriously contaminated. why has the government been slow in clean-up efforts?

a. with other industries on the rise, there is no motivation for the government to spend the money cleaning the ganges.
b. there is strong belief among the hindu majority that harm cannot come to such a sacred river.
c. india is underdeveloped and therefore lacks the necessary finances to undertake clean-up efforts.
d. the government wants lower population density by encouraging people to move away from banks of the ganges river.