Pick up the correct statement regarding columns.

• A. The cross sectional area of longitudinal reinforcement, should not be less than 0.8% nor more than 4% of its gross sectional area
• B. The minimum of longitudinal bars provided in rectangular and circular columns are 4 and 6 respectively
• C. In helically reinforced column, the minimum number of longitudinal reinforcement should be six
• D. If the effective length of a column is less than three times its lateral dimension, it is generally called a pedestal