A company purchases equipment for $50,000 with an estimated salvage value of $5,000 at the end of its useful life. If the equipment has a useful life of 5 years, using the straight-line depreciation method, what is the annual depreciation expense? A) $9,000 B) $10,000 C) $8,000 D) $11,000 Please select the correct option:

A) $9,000

B) $10,000

C) $8,000

D) $11,000