Given that t1 is a reference to a live

Given that t1 is a reference to a live thread, which is true?（）

• AThe Thread.sleep() method can take t1 as an argument.
• BThe Object.notify() method can take t1 as an argument.
• CThe Thread.yield() method can take t1 as an argument.
• DThe Thread.setPriority() method can take t1 as an argument.
• EThe Object.notify() method arbitrarily chooses which thread to notify.