Draw the extensive form of the following game:

Both Ann and Beth put one dollar in the pot. Ann gets a card from a stack of four queens and four kings

and looks at it privately. Then Ann either folds, in which case Beth gets the money in the pot, or raises.

Raising means that Ann has to put another dollar in the pot. When Ann has raised, Beth either folds, in

which case Ann gets the pot, or Beth calls by putting also one more dollar in the pot. If Beth calls, Ann

gets the pot if she has a king, otherwise Beth gets the pot.