How Are the Probes for ChIP-On-Chip Different from Probes Made

How are the probes for ChIP-on-chip different from probes made for gene expression analysis?

A) Arrays for ChIP-on-chip are made using probes based on intergenic regions.
B) Arrays for ChIP-on-chip are made using probes based on cDNAs.
C) Arrays for ChIP-on-chip are made using probes based on synthetic oligonucleotides
D) Arrays for ChIP-on-chip are made using probes based on rRNAs.
E) Arrays for ChIP-on-chip are made using probes based on miRNAs.