If 'S' is the amount available after 'n' interest periods for an initial principal 'P' with the discrete compound interest rate 'i', the present worth is given by

A. Initial cost B. Book value at the end of (n - 1)^th year C. Depreciation during the (n - 1)^th year D. Difference between initial cost and salvage value

A. Inventories B. Marketable securities C. Chemical equipments D. None of these

A. Value of the asset decreases linearly with time B. Annual cost of depreciation is same every year C. Annual depreciation is the fixed percentage of the property value at the beginning of the particular year D. None of these

A. Total income B. Gross earning C. Total product cost D. Fixed cost