Biodegradable substances result in the formation of compost and natural replenishment. Reason: It is due to the breakdown of complex inorganic substances into simple organic substances.
a) Both the statement and the reason are true, and the reason is the correct explanation of the statement.
b) Both the statement and the reason are true, but the reason is not the correct explanation of the statement.
c) The statement is true, but the reason is false.
d) The statement is false, but the reason is true.
