How Was the Appropriate Penance Determined for Specific Sins

How was the appropriate penance determined for specific sins?

A) The penance was set according to the type of financial damage caused by the sin.
B) Manuals offered priests guidance on the appropriate penance for sins.
C) Local nobles or kings established rules for penance in order to limit the authority of the church.
D) The penance was largely arbitrary, based on an individual priest's opinions of the sin's seriousness.