In which of the following situations does the federal government owe a fiduciary duty to Aboriginal peoples?

a) The federal government passes a law setting a speed limit for trucks over a certain weight.

b) The federal government passes a law limiting how much fish any person can catch for personal consumption.

c) The federal government passes a law requiring carpenters to register with the town they are working in.

d) The provincial government passes a law limiting how much fish any person can catch for personal use.

e) The municipal government passes a regulation limiting the number of birdhouses a person can have.