Write the next sentence in this paragraph:

How to pick your nose inconspicuously
Position the index finger of the opposite-side hand alongside the exterior of the obstructed channel.
Nonchalantly slip the thumb as deep as necessary into the nostril.
Using the thumbnail, delicately clamp onto the dried mucous mass.

Pick from:
a). This will remove any bad smell from your nose. A soft object like a paper towel easily comes out of the nose inclearly.
b). Slowly withdraw the thumb and its payload from the nostril. At this step in the process be particularly vigilant for any trailing mucous which might be attached to the payload.
c). Calmly but firmly pry straight down on the nasal pipe. Observe your nose-carefully! Develop the methods used for ging out debris.
d). Push the nose down with light pressure. If one of the bottles has leaks, prop your hand until it is almost straight (make sure to force open the lid).
b).