Placid Places Incorporated, a calendar year taxpayer, purchased an apartment building on October 1 of the current year for $1,200,000, of which $200,000 was allocable to the land. The corporation's depreciation for the building for the year will be the product of the building's basis and 1/27.5 and 2.5/12. 1/27.5 and 9.5/12 O 1/39 and 2.5/12 O 1/39 and 9.5/12.