For access control Java includes the keywords Select one: O a public and exposed O b. public, private and open O c. public, private and protected O d. All of the above Static methods Select one: O a. can be called by an object O b. are also called class methods. O c. are not contained within an object. O d. All of the choices. The primary attribute of Java that defines it as object oriented is Select one: O a. its use of classes. O b. its byte code compilation. c, its portability. O d. its distributed nature. Threads in Java Select one: O a. are not supplemented by resource locking. O b. are at an object level O c. cannot be used in applets O d. All of the choices n