1.Let a,b,x,ya,b,x,ya,b,x,y be real numbers such that a2+b2=81a^2+b^2=81a2+b2=81, x2+y2=121x^2+y^2=121x2+y2=121, and ax+by=99ax+by=99ax+by=99. Then the set of all possible values of ay−bxay-bxay−bx isa.(0,9/11](0, 9/11](0,9/11]b.(0,9/11)(0, 9/11)(0,9/11)c.{0}\{0\}{0}d.[9/11,∞)[9/11, \infty)[9/11,∞)Login to continueOnly logged in users canattempt or see the solution.