Statement I:It is given that the ratio of son's age to father's age is 1:5Let the son's age be x and father's age be 5x.(x)(5x)=245x=7Therefore, son's age is 7 years and father's age is 35 years.After 9 years, son's age is 16 years and father's age is 44 years.Ratio =16:44=4:11Statement II:Initially - 70L milk and 30L waterAfter selling 51​ th of the solution −56L milk and 24L waterAdding water −56L milk and 44L waterwater:milk =44:56=11:14The answer is option B.