McDonald's advertises a sweepstakes through a mailing that says prizes are to be reserved

for 15,610 "lucky winners." The mailing further states, "You may be [a winner] but you will

never know if you don't claim your prize. All prizes not claimed will never be given away, so

hurry." The mailing does not give the odds of winning. The FTC sues to enjoin the mailing as

deceptive. What is the result?

[Answer in one paragraph making sure to state the rule and apply it to the facts.]