Well T28D, if you don't know what's wrong with Checkboard's answer, I've got way more to do today than sort out your homework on such a basic question. BTW, your answer is also obviously incorrect, but I guess you don't understand that either.
I just wish people would refrain from posting their guesses or whatever it is that leads to answers like these. If you really don't know the answer, download the Regs from the CASA website for free and spend a few measly minutes actually reading them.