Consider a $m:n$ relationship and an ER model using it. Which of the following is/are correct for converting this relationship to a relational instance? (Mark all the appropriate options)
- If participation of both the entities are mandatory then we only need $2$ relations
- If participation of both the entities are mandatory then we need $3$ relations
- If participation of only one entity is mandatory then we only need $2$ relations
- If participation of both the entities are optional then we need $3$ relations