Of Those Who Can Grant Indulgences

We must now consider those who can grant indulgences: under which head there are four points of inquiry:(1) Whether every parish priest can grant indulgences?(2) Whether a deacon or another, who is not a priest, can grant indulgences?(3) Whether a bishop can grant them?(4) Whether they can be granted by one who is in mortal sin?

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Whether every parish priest can grant indulgences?
Whether a deacon or another who is not a priest can grant an indulgence?
Whether a bishop can grant indulgences?
Whether indulgences can be granted by one who is in mortal sin?