Identify the exact type of nib to be used for the given scenario. Rachael and Donna are both skilled drafting engineers. Rachael wants to select a type of nib which is best for drawing lines. She should use nibs. Donna wants to select a type of nib which is best for sketching and shading. She should use nibs.

1. And 2.
a. Wooden
b. Plastic
C. steel