1)

Parts (a) and (b):
Part (c):
2)

3)

Part (a):
Part (b):
Part (c):
4)

Part (a):
Part (b):
Part (c):
5)

Part (a):
Part (b):
Part (c):
Part (d):
Parts (e) and (f):
6)

Parts (a), (b), (c), (d) and (e):
Part (f):
7)

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