The difference between 2.3 × 10^–2 m and 2.30 × 10^–2 m is 

(a) Precision (2.30 × 10^–2 m is more precise).

(b) Uncertainty (2.30 × 10^–2 has a small uncertainty).

(c) Accuracy (2.3 × 10^–2 has less uncertainty).

(d) None of the answers are correct.