Riva works at a full$-$time job, but also restores her antique doll collection

and sells them on eBay. She received $$10,000$ of sales revenue and paid

$$12,000$ of supplies expense. A number of factors must be weighed to

determine the appropriate classification of the activity. Depending on that

classification, the net effect on her taxable income will be

A$)$

B$)$

C$)$

D$)$