On February 1, 2019, I contacted, over the telephone, my dentist, Dr. Pain, and set an appointment to have my teeth cleaned on February 6, 2019 at 10:00am.I was thinking that the 6^th was a Thursday, not a Wednesday.My dentist charges $79.00 for cleaning of teeth.I missed the appointment, and didn't even think of the appointment until after 11:30am on the 6^th, and the dentist didn't have any patient that was able to take my place. What contractual issue(s) are relevant to this situation?

a.Since it was not in writing, it is not a legal contract.

b.No genuineness of assent.

c.No breach of contract.

d.Breach of contract.

e.Legal contract, but no damages.

And why?