Prepare journal entries to record the following transactions involving short-term debt investments.

a. On May 15 , paid \(\$ 100\) cash to purchase Muni's 120-day shortterm debt securities ( \(\$ 100\) principal), dated May 15 , that pay \(6 \%\) interest (categorized as held-to-maturity securities).

b. On September 13, received a check from Muni in payment of the principal and 120 days' interest on the debt securities purchased in transaction a.