The load stress of a section can be reduced by
A. Decreasing the lever arm
B. Increasing the total perimeter of bars
C. Replacing larger bars by greater number of small bars
D. Replacing smaller bars by greater number of greater bars
Answer: Option C

Actually there is a typing error here.
The bond stress can be reduced by replacing larger dia bars by greater number of smaller dia bars.
Limiting value of bond stress is 1MPa.
Not load stress...it should be bond stress