In $2017,$ Costello Company performs work for a customer and bills the customer $$10,000$; it also pays expenses of $$3,000.$ The

customer pays Costello in $2018.$ If Costello uses the accrual$-$basis of accounting, then Costello will report

revenue of $$10,000$ in $2017.$

net income of $$7,000$ in $2018.$

revenue of $$10,000$ in $2018.$

expenses of $$3,000$ in $2018.$