Answer:
A) Perhaps, if a court felt that the first realtor (Burt) had extended considerable time, effort, and expense in helping the home buyer.
Step-by-step explanation:
Since Jones signed an exclusive agency agreement with Burt also, then he is liable to both realtors, not only Woolston. If Jones had only paid Woolston, then Burt could have sued Jones for damages equivalent to the sales commission just like Woolston did. Whenever you sign a contract, you are responsible for performing your part.
The only argument that Jones could use in his favor would be that Burt didn't do his job, so both would have breached the contract.