What is the difference between position power and personal power in leadership?

a. Position power is delegated down the chain of command, while personal power is bestowed upon by followers.
b. Position power is based on the leader's ability to reward or punish followers, while personal power is based on the leader's expertise or charisma.
c. Position power is derived from the leader's role or status in the organisation, while personal power is derived from the leader's personality or character.
d. All of these options.