Status of bacterial count, oxygen level, no of area plant and animals given below of four river side cities. Which of them situated near an unpolluted river, on the basis of the given data

• A. City No. of plant No. of Animals Bacterial count Oxygen level A Few Few Low High
• B. City No. of plant No. of Animals Bacterial count Oxygen level B Few Many High Low
• C. City No. of plant No. of Animals Bacterial count Oxygen level C Few Few High Low
• D. City No. of plant No. of Animals Bacterial count Oxygen level D Many Many Low High