hi hi please help and show me how to do it, ill mark as brainliest!

Order the following numbers written in scientific notation from least to greatest:
1.7 × 10-3, 7.7 × 10-3, 6.7 × 10-3, 2.7 × 10-3

A.
1.7 × 10-3, 2.7 × 10-3, 6.7 × 10-3, 7.7 × 10-3
B.
7.7 × 10-3, 6.7 × 10-3, 2.7 × 10-3, 1.7 × 10-3
C.
1.7 × 10-3, 2.7 × 10-3, 7.7 × 10-3, 6.7 × 10-3
D.
1.7 × 10-3, 6.7 × 10-3, 2.7 × 10-3, 7.7 × 10-3