4:6-3. Required Motions; Preliminary Hearings

Defenses (a) (e) and (f) in R. 4:6-2, whether made in an answer or by motion, shall be heard and determined before trial on application of any party, unless the court for good cause orders that the hearing and determination thereof be deferred until the trial. Defenses (b) (c) and (d) in R. 4:6-2 shall be raised by motion within 90 days after service of the answer, provided that defense has been asserted therein and provided, further, that no previous motion to which R. 4:6-6 is applicable has been made.