A MNC faces the following effective, after-tax dollar borrowing and lending rates in the US and UK. The affiliate in the UK owes USD2 million to the affiliate in the US. The timing of this payment can be changed by up to 60 days. US lending rate: 3.70% US borrowing rate: 3.85% UK lending rate: 3.65% UK borrowing rate: 3.80% How much in USD does the MNC save per annum by leading payments to the US? a. USD666.67 b. USD4,000 c. USD12,833.33 d. USD73,000 e. USD77,000