A montmorillonite platelet has a specific surface/volume equal to____________

• A. 120/‚âà√≠¬¨‚à´
• B. 100/ ‚âà√≠¬¨‚à´
• C. 500/ ‚âà√≠¬¨‚à´
• D. 1000/ ‚âà√≠¬¨‚à´