Which of the following statements are correct, with respect to wind load analysis as per IS:875 (Part 3)?i) For a given basic wind speed, the value of Risk Coefficient k1 decreases if the mean probable design life of structure in years is increased.ii) Value of factor k2 decreases, if the category of structure changes from Category 1 to Category 4.iii) When upwind slope is less than 3°, the value of Topography factor k3 may be taken as 1.

• A. i) and ii)
• B. ii) and iii)
• C. i) and iii)
• D. i), ii) and iii)