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Which statement is true?

A.	Calling Runtime.gc() will cause eligible objects to be garbage collected.	B.	The garbage collector uses a mark and sweep algorithm.
C.	If an object can be accessed from a live thread, it can't be garbage collected.	D.	If object 1 refers to object 2, then object 2 can't be garbage collected.

Answer and Explanation

Answer:If an object can be accessed from a live thread, it can't be garbage collected.

Explanation:
This is a great way to think about when objects can be garbage collected.
Option A and B assume guarantees that the garbage collector never makes.
Option D is wrong because of the now famous islands of isolation scenario.

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