9. I promised John that I will pay him P200,000 to clear my 20-hectare farm lot of all the cogon grass growing in it without the grass regrowing within a year from the time it is cleared. Identify the requisites of a contract in this set of facts. 10. Alexander sold Mary an antifungal spray when the latter came to him looking for something to spray on her plants which were suffering from powdery mildew. Alexander said what he was selling her is the best antifungal spray he has in his agricultural supply store. All of Mary's plants even after she repeatedly sprayed the product Alexander sold her. Is there reason in this particular set of facts that Alexander may be sued for damages by Mary