Coronado's Quik Shop bought machinery for $$77000$ on January $1,2020.$ Coronado estimated the useful life to be $5$ years with no

salvage value, and the straight$-$line method of depreciation will be used. On January $1,2021,$ Coronado decides that the business will

use the machinery for a total of $6$ years. What is the revised depreciation expense for $2021?$ $$6160$

$$10400$

$$15400$

$$12320$