Which statement below is incorrect about the events that occur in a negative polarity lightning strike?

Select one:

a. the stepped leader forms as positive charges leave cloud base searching for a path of least resistance to the ground

b. the stepped leader is barely visible and often goes unseen

c. the return stroke travels up from the ground into the cloud

d. the part of the lightning strike we see is the return stroke

e. once a pathway is opened, a second stepped leader can travel back through the same path and create a second return stroke.