A passage has been given in this question and a statement related to it. Read the passage carefully and review the statement based on it.
Officials said on Thursday that the Punjab government, with the help of WWF - India, is planning for the first time, to protect one of the world's rarest mammal Dolphin, found in the Indus river. It is found only in some areas of India and Pakistan. In India, it is found only in the area of 185 km in the river Vishya, from Talvara around Punjab. Two Forest Departments, wildlife protection Punjab and WWF-India officials will gather data of Dolphin population in five-day workshop.
According to Suresh Babu, Director of River, Wetland and Water Policy in WWF - India, the largest population of Indus Dolphin is Platinista Gangetika Minor, which is found in entire Pakistan where there are approximately 1500 kilometers of Indus river. According to him, "If the flow of water in the river is sufficient and water is clean, then dolphins will be found there, if not Sutlej is an example." Experts say that in Sutlej, it was found in decades ago, but the pollution in the rivers by the residents around the rivers caused them to be extinction. Suresh Babu told IANS that these species of dolphins are visually impaired and communicates on the basis of resonance like bats. These species of dolphin is one of seven species of dolphin found in fresh water all over the world.
Statement: Indus dolphins were found till the river Satluj was clean.
Choose one of the following options.
A. The statement is definitely true.
B. The statement is probably true.
C. Statement can not be determined
D. Statement is definitely wrong.