The following table shows the amount (in ~ '000) received by a store-owner by selling 5 different brands of milk during a given month.

The price per litre of milk of all the brands is ₹40 per litre. How many litres of milk, of all the brands taken together, were sold by the store during that month?

A

7200 litres

B

8100 litres

C

7500 litres

D

7800 litres