The correct option is A A is strongly basic and B is weakly basic.
The basic and acidic nature of a solution is determined by measuring the hydrogen ion concentration present in it. This concentration can be measured by a pH scale. The table given below shows the approximate pH range of the acidic, basic and neutral solutions. Type of solutionApprox. pH range Weakly acidic3 - 7Strongly acidic0 - 3Neutral7Weakly basic7 - 10Strongly basic10 - 14From the table it is clear that the solution with pH value 11.0 is strongly basic and that with pH 7.7 is weakly basic.