If the load carried by a CBR specimen at 2.5 mm penetration is 35 kg per square cm, the CBR of the soil is

If the load carried by a CBR specimen at 2.5 mm penetration is 35 kg per square cm, the CBR of the soil is 

• A. 10%
• B. 35%
• C. 50%
• D. 70%

 

The correct answer is option C. 50%. Can you explain this answer in the comments?

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