Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7.From this information,we can reasonably conclude that

A)solution Y has no free hydrogen ions (H⁺).
B)the concentration of hydrogen ions in solution X is 30 times as great as the concentration of hydrogen ions in solution Y.
C)the concentration of hydrogen ions in solution Y is 1000 times as great as the concentration of hydrogen ions in solution X.
D)the concentration of hydrogen ions in solution X is 3 times as great as the concentration of hydrogen ions in solution Y.
E)the concentration of hydrogen ions in solution X is 1000 times as great as the concentration of hydrogen ions in solution Y.