Emma is a video-game programmer. She writes the code for a game in which players are awarded five points every time they complete three tasks in the game. The players are also awarded five points at midnight every day. In the context of operant conditioning, the award of five points follows the of reinforcement.
A. fixed-interval and variable-interval schedules
B. variable-interval and fixed-ratio schedules
C. fixed-ratio and fixed-interval schedules
D. fixed-ratio and variable-ratio schedules

In a property settlement after a divorce, the wife was awarded all personal property that had been accumulated during the marriage, including the husband's classic 19-inch black-and-white tv set. in order to get his prized tv set back, the husband lied to his friend, telling him that the wife took the tv set in violation of the property settlement. the friend remembered that the wife gave the friend's wife a key to her new home, and he volunteered to go with the husband to get the tv back while the wife was at work. the husband and the friend went to the wife's house, but, unbeknownst to them, the wife had taken the day off work. after the friend noisily opened the back door with his wife's key, the wife called the police, who quickly arrived and arrested the husband and the friend. as to a charge of common law conspiracy to commit larceny, how should the friend be found?