The auditor is gathering evidence to test the assertion that the client’s capitalization of leased equipment assets is properly valued. Which of the following sources of evidence will the auditor generally find to be of the highest quality (most reliable and relevant)?

a. Inspection of the leased equipment. 

b. Inspection of documents, including the lease contract and recalculation of capitalized amount and current amortization. 

c. Confirmation of the current purchase price for similar equipment with vendors. 

d. Confirmation of the original cost of the equipment with the lessor.