For a triangle ABC, D and E are two points on AB and AC such that $$AD = \frac{1}{6} AB, AE = \frac{1}{6} AC$$. If BC = 22 cm, then DE is __________. (Consider up to two decimals)

A

1.33 cm

B

1.67 cm

C

3.67 cm

D

3.33 cm