When an Interim Rule is issued, what effect does it have on an...

When an Interim Rule is issued, what effect does it have on an acquisition? Select all that apply. (found out that the answer is NOT A, C)

a.     It can be ignored until the FAR is updated

b.     It precedes the issuance of a final proposed FAR Rule and is invalid

c.      When applicable, the Interim Rule impacts the acquisition immediately beginning with the effective date listed in the Federal Register Notice

d.     It has the force and effect of a FAR requirement and must be followed as written