A company bought a telecommunication equipment for 310,000. Other expenses including installation amount to 35,000. The equipment is set to have 10 years with the salvage value at the end of life of 48,000. Determine the depreciation charge during the 3th year and the book value at the end of the 6th years by

(a) sinking fund method with i=13%

(b) double declining balance method

(c) straight-line method

(d) SYD method.

(e) declining balance method