Emily is an accountant for a major accounting firm. One day at work, she is discussing her collection of rare figurines with one of her co-workers. Emily tells her co-worker that she keeps his collection at home and that she has recently purchased several Chinese Panda figurines at an exceptional price. The co-worker expresses an interest in buying two of the figurines at a price of $350, and a contract is duly formed. If no place for delivery is expressed, where are the figurines to be delivered?

a.At Emily's home

b.At the office of the accounting firm where the parties to the contract work

c.In the parking lot of the accounting firm

d.At the co-worker's home