answer the following questions

20) A dental office would likely model the relationships between the Sales event and both the Services and Supplies Resource entities as A) M N B) 1:1 C) IN D) IM. 21) In a relational database, details about activities such as Cleaning, X-Rays, Fillings, Root Canals, Crowns, and Extractions would all be stored in which table? A) Services B) Sales C) Inventory D) Patient