Which of these are good starting points to use when configuring the maximum values for SGA and PGA, based on the amount of memory available on the system?

The DBA has chosen to manage SGA and PGA memory separately in an OLTP database
because of his unique knowledge of the application.
Which of these are good starting points to use when configuring the maximum values for
SGA and PGA, based on the amount of memory available on the system?

A.
20% SGA, 80% PGA

B.
25% SGA, 75% PGA

C.
50% SGA, 50% PGA

D.
75% SGA, 25% PGA

E.
80% SGA, 20% PGA