Part (i) and (ii). Do note that many of the things I have written down are more for your understanding as to how I came to arrive at my deductions, you don’t have to write them in your final solution / as part of your working. For example, for part (i) you actually only need to write the last line in my solution.

The answers to the rest of the parts of the question. Leave a comment if you still need help / clarifications!