A single effect evaporator is fed with 10000 kg / h of weak liquor containing 15 % caustic by weight and is concentrated to get thick liquor containing 40 % by weight caustic. Calculate:

• A. kg / h of water evaporated and
• B. kg / h of thick liquor
• C. 4560 kg/h, 3720 kg/h
• D. 3460 kg/h, 7680 kg/h