Which of the following occurs when a fraudulent buyer submits high bids to discourage other bidders, and then retracts the bids so people they know can get the item at a lower price?

Typically, one does not optimize a program (make it run faster or with less use of memory) until after it is running, well-debugged, and well-tested. (Of course, you still have to test again after each optimizing modification.) Here is an optimization that we could make to the adventure game. Currently, showRoom compares the room variable to each possible room—even if it matched earlier. Python gives us a way of only testing once, by using an elif instead of later if statements. The statement elif means “else if.” You only test the elif statement if the earlier if was false. You may have as many elif statements as you like after an if. You might use it like this:

``` if (room == ‘‘Porch’’): showPorch() elif (room == ‘‘Kitchen’’): showKitchen() ```

In the castle game, the player must answer a riddle correctly or provide a password in order to pass through to the Courtyard. Add that to your game.

Note: The answer will need to include a new file-level variable, a change to the showGate function (to prompt the riddle/password) and a change to the pickRoom function (to allow for the riddle/password answer).