Journalize the entries to record the following selected bond investment transactions for Olson Technologies: For all journal entries: If an amount box does not require an entry, leave it blank.
a. Purchased for cash $90,000 of Hart Industries 7% bonds at 100 plus accrued interest of $1,050
b. Received first semiannual interest.
c. Sold $60,000 of the bonds at 102 plus accrued interest of $750.