Jefferson Manufacturing Company constructed a manufacturing plant at a cost of \$6,000,0 . Included in those costs were land costs of \$600,000 . During the construction of the plant, Jefferson also capitalized interest costs of \$400,000 . The plant had an estimated salvage value of $100,000 and an estimated life of 30 years . What is the annual depreciation on the manufacturing plant? (assume SL method)

A: $188,667 B: $190,000 C: $210,000 D: $176,667