An agent's client calls on Monday to discuss the current market situation. They discuss how 100 shares of KAPCO common stock would be an appropriate addition to the client's portfolio. On Thursday, the client calls and tells the agent to place an order for the KAPCO stock at whatever price the agent feels is best. The agent waits until Friday, purchasing the stock at a price $2 per share below Thursday's low. In this case the agent acted A) improperly; the order should have been placed on Thursday B) properly because the agent used discretion as to price and time C) improperly; the order cannot be placed without prior written authorization allowing discretion D) properly because the agent saved the client money