Pam Offers a Reward for the Return of the Pet

Pam offers a reward for the return of the pet snake that escaped from her purse while she was having dinner at a restaurant.Fred finds the snake and returns it to her.Which of the following is relevant in deciding whether Pam must pay the reward?

A) Whether Fred is a minor.
B) Whether Fred knew about the reward when he returned the snake.
C) Whether Fred intended to get the reward.
D) Whether the offer for the reward was in writing.