Sunil recorded the lengths of his model cars (in cms). Which of the following shows the lengths in order from least to greatest?
A6.34 cm, 6.5 cm, 6.8 cm, 6.78 cm, 6.45 cm
B6.34 cm, 6.45 cm, 6.5 cm, 6.78 cm, 6.8 cm
C6.8 cm, 6.78 cm, 6.45 cm, 6.5 cm, 6.34 cm
D6.78 cm, 6.8 cm, 6.5 cm, 6.45 cm, 6.34 cm