9,3 Victoria owns a gym. In her financial year to 31 August 20X2 she buys a new exercise bike for £450. The date of purchase was 1 March 20X2. Victoria aims to keep gym equipment for three years. After three years she finds that the equipment is usually well worn and worth very little. She advertises old equipment to her members, and would usually expect to receive about £30 for an old exercise bike.

Victoria charges depreciation in her accounts on the straight-line basis, with a pro-rated charge in the first and final years of ownership, depending on the dates of acquisition and disposal. What is the depreciation charge in respect of the new exercise bike in the year to 31 August 20X2?

a) £70

b) £140

c) £75

d) £150.