the diameter of a coin is measured by a vernier callipers. the five observations that were taken are given as 2.53 cm, 2.50 cm, 2.51 cm, 2.47 cm and 2.49 cm.

what is the percentage error in the measurement ?
a. 1.6%
b. 1.0%
c. 0.8%
d. 4.2%