The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?

• A. ECi:<1.5, SAR < 10 & RSC< 2.5
• B. ECi:>1.5, SAR > 10 & RSC> 2.5
• C. ECi:>1.5, SAR 2.5
• D. Both a & b