shenghan has lost her precious little dog jewel. she was walking jewel off-leash at a park when jewel ran off into the forest chasing a chipmunk. jewel did not return and has been missing for a day. shenghan is heartbrroken and has put up posters in the park and the surrounding neighbourhood. The posters have a picture of Jewel and say "Have you seen Jewel?" $1000 Reward if you find her and bring her to me." Taras saw the poster and happened to see a dog that matched the dog on the poster. Taras caught the dog and brought it to Shenghan. It was Jewel. Which of the following statements is CORRECT?

a) A unilteral contract has been formed between Shenghan and Taras. Taras accepted Shenghan's offer of paying a reward for the dog.

b) The posters were nt invitation to treat.

c) All of the above

d) None of the above