Which statement correctly compares the ph of water to that of other substances?

a: the ph of water increases as its temperature increases, while other substances have a stable ph.
b: the ph of water is neutral; it is higher than the ph of acids and lower than ph of bases
c: water contains more hydrogen ions than most other substances, giving it a higher ph.
d: water is neutral and has a ph of 0; acids have a ph greater than 0 and bases have a ph less than 0