An alkali is titrated against acid with methyl orange as an indicator, which of the following is a correct combination?
A Strong base is titrated by strong acid and end point is pinkish red to yellow.
B Weak base is titrated by strong acid and end point is yellow to pinkish red.
C Strong base is titrated by strong acid and end point is pink to colorless.
D Weak base is titrated by strong acid and end point is colorless to pink.