can somebody verify my work plus answer he second question

on Inc d the following costs d Required: 1. Which of the following are induded in R&D costs of the current period? depreciation expense on the building housi the R&D activities Not research and development Not research and development c. current-period depredation expense on a machine used in multiple R&D activities Not research and development Not research and development b cost of a market research stud d. salary of the di or of R&D e. salary of the vice president who spends one-third of her time overseeing the R8D Research and development activities f. pension costs for the salaries in Items d and e 2. R&D is expensed as incurred because: II. It's easier to implement. III. Expensing all R&D results in greater comparability between companies Not research and development . There is a high degree of uncertainty about which ReD projects will produce benefits and which will not I and III only. I and II only IlI and III only