All of the following are true of IP spoofing, except: choose one

a.	IP spoofing attack is generally limited to blind injections, because replies go back to the spoofed address

b. A spoofed IP address is typically one in an internal or trusted range of addresses

c.To enable bi-directional communication, the attacker must change all routing tables to point back to the spoofed IP address (called cache poisoning)

d.	A node that receives an asynchronous (unexpected) always responds with a TCP RST packet