Which changes made to the following class would help to properly encapsulate the data in the class? 

A. Add a getter method for material.

B. Add a setter method for material.

C. Change the access modifier of material to protected.

D. Change the access modifier of strength to private.

E. None of the above.

package shield; public class Protect { private String material; protected int strength; } public int getStrength () { return strength; } public void setStrength (int strength) { this.strength = strength; }