Jake and Bob entered into the following agreement: Jake promised to pay Bob $500 if he could steal the next day's exam paper from their Business Law professor and give it to him at least one hour before class. That night, Bob broke into the professor's office on campus and stole a copy of the test. He brought it to Jake four hours before the exam, but Jake got cold feet and was worried about getting caught. He told Bob he no longer wanted the exam and refused to pay him the $500. Has Jake legally breached the contract between himself and Bob? Could Bob sue him for the $500 and win? Explain.