Consider the following statements :
(1) Bridgehead halides are inert towards both SN1 and SN2 reactions (till one of the ring size is eight member ring)
(2) The first step in both SN1 and E1
(3) SN2 reaction proceed with total retention of configuration
(4) E2 elemnations are by use of asolvent of low polarity and high concentration of a strong base
Which og the above statements are correct?