10 Frankenstein Enterprises received two notes from customers for sales that Frankenstein made in 2018. The notes included: Note A Dated 5/31/2018, principal of $125,000 and interest due 3/31/2019. Note B: Dated 7/1/2018, principal of $211,000 and interest at 7% annually, due on 4/1/2019 Frankenstein had accrued a total of $15,300 interest receivable from these notes in its 12/31/2018 balance sheet 80125.34 The annual interest rate on Note A is closest to