Draw a Professor/Office E-R Diagram and answer the below questions(5Pts).

Draw a Professor/Office E-R Diagram and answer the below questions (5Pts). 

1. Describe all the applicable relationships of this E-RD (E-R Diagram)
2. Indicate and label the E-RD's Cardinality and Modality, and describe, using the appropriate phrases, what the Cardinality/Modality conveys
3. Draw at least three attributes per an entity
4. Indicate/designate, if applicable, the Primary Keys, Foreign Keys, and/or Candidate Keys.
5. Indicate if there exist an associative entity