each of the following independent events requires a year end adjusting entry show how each event and its related adjusting entry af/

a. Paid $6,000 cash in advance on April 1 for a one-year insurance policy.
b. Purchased $2,400 of supplies on account. At year end, $200 of supplies remained on hand.
c. Paid $7,200 cash in advance on March 1 for a one-year lease on office space.
d. Received an $18,000 cash advance for a contract to provide services in the future. The contract required a one-year commitment starting September 1.