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Water tax is increased by 20% but its co...

Water tax is increased by `20%` but its consumption is decreased by `20%`. Then the increase or decrease in the expenditure of the money is .

A

4% decrease /कमी

B

4% increase /वृद्धि

C

5% decrease /कमी

D

No change/ कोई परिवर्तन नहीं

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