Triangle KLM has a 120-degree angle at K, and side KL is three-fourths as long as side LM. To the nearest tenth of a degree, find the sizes of the other two angles of KLM.
a) 30.0° and 30.0°
b) 60.0° and 90.0°
c) 45.0° and 75.0°
d) 90.0° and 60.0°