Which list shows the following numbers in order from least to greatest
1.23; 1.2; 2.31; 3.2

A:1.23 1.2 2.31 3.2
B:1.2 1.23 2.31 3.2
C:3.2 2.31 1.23 1.2
D:1.2 1.23 3.2 2.31