The co-efficient of permeability of fine sand is____________

• A. 1.0 and greater
• B. 1‚Äö√†√∂‚àö‚â•10-6 and smaller
• C. 1‚Äö√†√∂‚àö‚â•10-2 to 5‚Äö√†√∂‚àö‚â•10 -3
• D. 5‚Äö√†√∂‚àö‚â•10-2 to 1‚Äö√†√∂‚àö‚â•10-3