UV, YA, ?, GK, KP, OUADEBCFCCCDDFAnswer: B. CF Read Explanation: U + 4 = Y, V + 5 = A Y + 4 = C, A + 5 = F C + 4 = G, F + 5 = K G + 4 = K, K + 5 = P K + 4 = O, P + 5 = URead more in App