please I need it urgent thank in java

4.a)(10 pts.) Given the code below, circle the statements that are true Circle cirel ne Cirele(0.5) Circle circ2 cireli iDcirc2 and eirel have the same contents ii)circ2 and cirel reference the same location in memory but have different contents ii)cirel and circl have the same contents but reference different locations in memory b) The Circle class has an overriden method public boolean equals (ob ject obj) f if (objinstanceof Circle) ( return this. radius (Circle)ob).radius else return false; i) How would cirol use the equals 0 method to determine if circ2 has the same contents in an expression. ii) In the method above, what does thethis keyword represent? iii) Why is the Circle cast used in the equals 0 method above