ATC reports an average asset duration of 5 years and an average liability duration of 4 years. In its latest financial report, the association recorded total assets of $3 billion and total liabilities of $2 billion. a) If interest rates began at 4.5 percent and then suddenly fell to 4 percent, what change will occur in the value of ATC's net worth? (5 marks) b) By how much would ATC's net worth change if, instead of falling, interest rates rose from 4.5 percent to 4.8 percent? Show final answer to 4 significant figures. e.g. 0.01234 billion