The respective number of significant figures for the numbers `23.023, 0.0003 and 2.1xx10^(-3)` are

Options

A. `5,1,2`
B. `5,1,5`
C. `5,5,2`
D. `4,4,2`

Explanation

Rule I We know all non zero are significant
Rule II zero is between two non-zero digits this is also significant
Rule III If zero left to the non-zero digit they are non -signnificant
Significant figures of number `23.023` is `5` Using I & II
Significant figures for number `0.0003` is Using I,II & III
Significant figures for number `2.1 xx 10^(-3)` is `2` Using I .