The following transactions take place in $2000$:

An elderly couple go to the movies and pay $$80$ for the tickets.

A family sells numerous knick$-$knacks at a garage sale for $$55$ :

A young executive buys $100$ shares of IBM for $$6,000.$

A college student receives $$400$ from his parents.

A young couple down on their luck receive food stamps worth $$150.$

A plumber performs work for a neighbor and receives $$75$ in cash that he doesn't record in his company's records.

A physician operates on a friend's husband and charges $$1,000$ for the operation instead of her usual $$3,000.$

A teenager paints the porch on his parents' house. The paint cost $$75.$ The cost of hiring a professional to do the job would have been $$400.$

A high school graduate works a summer job and makes $$4,500.$

The Federal Reserve Bank sells a bond for $$1,000.$

The addition to gross domestic product is

A$.$ $$8,335.$

B$.$ $$5,655.$

C$.$ $$15,335.$

D$.$ $$14,055.$