You have a computer with a Pentium 4 CPU and two PC-2400 DDR modules. The motherboard has room for two additional memory modules, and you'd like to install two PC-4000 modules. Which of the following statements is true?
a) The PC-4000 modules will not be compatible
b) The PC-4000 modules will improve system performance
c) The PC-4000 modules will only run at PC-2400 speed
d) The PC-4000 modules will require a BIOS update