Question

giving medal for answer, help plz



Solve by drawing a diagram

The school band was scheduled to march in the annual parade, but the band’s starting point was changed the day before the parade. The band director calls three band members. Each band member calls three other band members. Then these band members each call three members. How many band members, including the band director, are notified of the new starting point?
a.
12 members
b.
13 members
c.
20 members
d.
40 members