Which of the following could be added to a solution of sodium acetate to produce a buffer? ?

A) acetic acid only
B) acetic acid or hydrochloric acid
C) potassium acetate only
D) sodium chloride or potassium acetate
E) hydrochloric acid only

i knowt he answer is b but i don't know why

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  1. B) acetic acid or hydrochloric acid

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