6.a Let ordered pair (a, b) satisfying the system of equations 2 log (x2 + y2) - log5 = log {2(x2 + y2) + 75} 75} and log ģ) + log(5y) = 1 + and (5y) = 1 + log 2 then (A) number of such ordered pair is 2 (B) 6 + B2 = 25 (C) a & B are prime numbers (Da & ß are coprime numbers