When displaced concrete is neglected, which expression represents DRB balance ratio?

• A. ρbal_DRB = ρbal_SRB + ρ'(f's/fy)
• B. ρbal_DRB = ρbal_SRB + As2/bd
• C. ρbal_DRB = ρbal_SRB + ρ' (if displaced concrete neglected)
• D. ρbal_DRB = ρbal_SRB + ρ' (if displaced concrete neglected and compression steel yields)

Answer: (A)