| The isn't actually the same question, just different questions about the same problem.
However... manny, you need to read the red announcement at the top of the page. We have a homework help section where you can post questions like this. I personally don't much care whether it's posted here or there, but on homework help is another red accouncement that explains we are not here to just answer your homework problems for you.
You need to give us your guess at the answer, and since it's multiple choice, an explanation why would be good to have also. This way we can check your work and your reasoning, without actually just answering your homework for you. The goes for all four of your questions. | 
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