Why would a central bank buy or sell foreign currency?

To supplement their income in their senior years, Harold purchased a fixed immediate annuity at age 65, naming his spouse, Lucy, as the joint annuitant under a joint and 50% survivor annuity payout option that pays the couple $1,000 per month. If Harold were to die today, which of the following statements would be CORRECT?

A) Lucy would continue receiving monthly benefits of $1,000, but only for her remaining life expectancy, at which time payments would cease if she were still alive. B) Lucy would continue receiving monthly benefits of $500, but only for her remaining life expectancy, at which time payments would cease if she were still alive. C) Lucy would continue receiving monthly benefits of $500 for the remainder of her life. D) Lucy would continue receiving monthly benefits of $1,000 for the remainder of her life.

Broker Hays took a 90-day exclusive agency listing to sell a property that was owned by Wilson. After 30 days, Hays had not sold the property, so Wilson sent him a certified mail letter canceling the listing. One week later Wilson listed the property with several brokers using open listings. Two weeks later, one of the brokers who had an open listing on the property completed a sale to new owners. In this situation Wilson most likely:

A: Did not have the right to give open listings to the other brokers; B: Had a right to relist the property and also the right to cancel Hays' listing and his notice of cancellation would accomplish this without possible liability to Wilson; C: Owes the commission only to the selling broker; D: Is liable for payment of commission to Hays as well as to the selling broker.