Jose’s lab partner gives him a solution of sodium phosphate that is buffered to a ph 4. Because of an error that he made while calibrating the ph meter, Jose’s measurements of the ph of the sodium phosphate

Jose’s lab partner gives him a solution of sodium phosphate that is buffered to a ph 4. Because of an error that he made while calibrating the ph meter, Jose’s measurements of the ph of the sodium phosphate solution are 5.4,5.4, and 5.4

Which statement best describes his results
A they are accurate but not precise
B they are precise but not accurate
C they are both precise and accurate
D they are neither precise or accurate

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