The fare on a commodity is diminished by 10% and its consumption increases by 10%. The collection of the revenue derived from it is K% change. The value of K is

The fare on a commodity is diminished by 10% and its consumption incre

1.	The fare on a commodity is diminished by 10% and its consumption increases by 10%. The collection of the revenue derived from it is K% change. The value of K is
A.	0
B.	-1
C.	1
D.	2
Answer» C. 1