The religousites certainly aren't going to pick anything inconvenient. If both books are unpalatable, regardless of the guarantee that one of the books really is Scripture of the One True Faith, both can be ignored.
If both comport to existing prejudice, and are not otherwise onerous in regards to the effort to effect compliance, both could be selected.
If both comport to existing prejudice, and are not otherwise onerous in regards to the effort to effect compliance, both could be selected.