经测定，甲、乙、丙、丁四条河流的pH如图所示，则河水呈碱性的河流是请选择DCBA0X,H+h1^:M4g0^,E4G/I(a3_*t+^9y.m:W:Y5?
(a3_*t+^9y.m:W:Y5?
A．甲(a3_*t+^9y.m:W:Y5?
B．乙(a3_*t+^9y.m:W:Y5?
C．丙(a3_*t+^9y.m:W:Y5?
D．丁(a3_*t+^9y.m:W:Y5?
(a3_*t+^9y.m:W:Y5?