resource assignments on modern pc's

[bart09]

i wonder if anyone can help me with this question.

why can't resource assignments be changed on modern pc's ?
the four possible answers are.
(A) - Modern pc's don't need resources to be assigned.
(B) - ACPI assigns resources automatically.
(C) - PCI buses automatically configure DMA.
(D) - Resource assignment is password protected at Administrator level.

if anyone knows the answer please let me know has soon as possible.
thank you

[mroilfield]

Is this school work?

[bart09]

my niece had this question has part of her homework but i don't know maybe someone else do