Which one of the following statements is false?

A Fill or Kill is a limit order to buy stocks at a certain price. If the prevailing price is higher than what is specified, the order is cancelled

A market order is simply an order to buy or sell a stock immediately at the prevailing market price.

If stock ABC is selling at $50, a limit-buy order may instruct the broker to buy the stock if and when the share price falls below $45.

A limit-sell order is where investors specify prices, higher than the current market price, at which they are willing to sell a security.

A limit stop-sell order is where investors specify prices, higher than the current market price, at which they are willing to sell a security.