[单选题]
When wine is exposed to air, the ethanol is slowly converted to ethanoig1yxbg yk nm2p.,.4mlc aci(8czmius 1v)bk z-c3qd. The \ce{pH}pH of a bottle of wine chan1v )z (u3m b8cc-ziqskges from 6.5 to 4.5. The concentration of $[H]^+$ is?
A. Decreased by 100
B. Decreased by 3
C. Increased by 3
D. Increased by 100