An advisor has been recommending that his clients buy shares of XYZ if the price falls to $25. He thinks it would also be a good idea to buy some in his own account. If he enters an order to buy 100 XYZ for his client at $25 per share, how should the IA's own order be entered?

a.He should enter it at $24.75 per share, to get filled after the client.

b.He can enter it at $25 per share, as long as he marks the order as "pro."

c.He should enter his order at market.

d.He may not enter an order for his own account for this security.