What is the characteristic feature of the titration curve for a 1 M solution of a weak acid when titrated with a strong base?
A) The curve shows a sharp and steep rise at the equivalence point, indicating a strong acid-strong base titration.
B) The pH at the equivalence point is significantly less than 7, indicating the formation of a weak acid-strong base salt.
C) The curve shows a gradual increase in pH with a noticeable buffer region before a relatively steep rise at the equivalence point.
D) The pH remains relatively constant throughout the titration, with no significant change at the equivalence point.