Lipid metabolism is under the molecular control of a group of compounds called nuclear receptors. Which of the following types of nuclear receptors is involved in the production of bile?
a) Peroxisome proliferator-activated receptors (PPARs)
b) Liver X receptors (LXRs)
c) Farnesoid X receptors (FXRs)
d) Retinoid X receptors (RXRs)