Which of the following need not necessarily be saved on a context switch between processes ? (GATE CS 2000)

Which of the following need not necessarily be saved on a context swi

1.	Which of the following need not necessarily be saved on a context switch between processes ? (GATE CS 2000)
A.	general purpose registers
B.	translation look-aside buffer
C.	program counter
D.	all of these
Answer» C. program counter