In a Part of a Printing Press, a Roller with a Radius

Multiple Choice

In a part of a printing press, a roller with a radius of 10 cm, rolls without slipping on the outside of a fixed cylinder with a radius of 30 cm. There is a connecting rod that connects the center of the cylinder to the axle of the roller. If the angular speed of the roller is 60 rad/s, what is the angular speed of the connecting rod?

A) 15 rad/s
B) 20 rad/s
C) 120 rad/s
D) 150 rad/s
E) 180 rad/s