Luke,a Salesperson for Mountaintop Coffee,Inc

Luke,a salesperson for Mountaintop Coffee,Inc.,learns that Mountaintop will in-crease the dividend it pays to shareholders.Luke buys 10,000 shares of Mountaintop stock.When the dividend is announced to the public and the price of the stock increases,Luke sells his shares for a profit.Luke would not be liable for insider trading if the information about the dividend was​

A) material when he sold the stock.
B) available to the public after he bought the stock.
C) available to the public before he bought the stock.
D) forward-looking when he bought the stock.