Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall. Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis. Select your answer according to the codes given below:

• A. Both A and R is true and R is the correct explanation of A
• B. Both A and R is true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true