What is the order from least to greatest of the following: 0.7, −0.2, 2.2, and −2.3?

−2.3, −0.2, 0.7, 2.2
2.2, 0.7, −0.2, −2.3
−0.2, 2.2, 0.7, −2.3
0.7, −0.2, −2.3, 2.2