A haemodializar is a mechanical what?

Which of the following statements is true with regard to written down value method of depreciation?

i. The rate at which the asset is written off reduces year after year
ii. The amount of depreciation provided reduces from year to year
iii. The rate of depreciation as well as the amount of depreciation reduce year after year
iv. The value of the asset gets reduced to zero over a period of time
A. Only (i) above
B. Only (ii) above
C. Both (i) and (ii) above
D. (i),(ii) and (iii) above