At a casino, gamblers spin a number-wheel containing positive, two-digit numbers. If the gambler bets on a prime number, he/she will win 2 times their bet, if the wheel shows that number. If the gambler bets on a non-prime number, he/she only wins half their bet, if the wheel shows that number. If a gambler won $100, which of the choices is possible?
I. bet $50 on 11
II. bet $50 on 21
III. bet $200 on 89	Choose the correct choice from the following answers.
A) I only B) II only C) III only D) I and II only E) I, II and III
There are only 3 possibilities to choose from, so   I. is possible (11 is prime) $50 X 2 = $100   II. is NOT possible (21 is not prime) $50/2 = $25   III. is NOT possible (81 is prime) $200 X 2 = $400   I onlynswer: I only
<result>A</result>
At a casino, gamblers spin a number-wheel containing positive, two-digit numbers. If the gambler bets on a prime number, he/she will win 2 times their bet, if the wheel shows that number. If the gambler bets on a non-prime number, he/she only wins half their bet, if the wheel shows that number. If a gambler won $100, which of the choices is possible?
I. bet $50 on 11
II. bet $50 on 21
III. bet $200 on 89