C-05-Q094mediumsingle_mcqThe solution of 2x+3y=31, 2x−3y=−232^x + 3^y = 31,\ 2^x - 3^y = -232x+3y=31, 2x−3y=−23 is —a(2,3)(2, 3)(2,3)b(3,2)(3, 2)(3,2)c(5,1)(5, 1)