What Other Technique Is Available for Neonates with Sepsis When

What other technique is available for neonates with sepsis when apheresis is unavailable?

A) A buffy coat prepared from plasma less than 12 hours old
B) A buffy coat prepared from red blood cells less than 12 hours old
C) A buffy coat prepared from a whole blood unit less than 12 hours old
D) A buffy coat prepared from platelets less than 12 hours old