A customer has a Windows 7 laptop that is a few years old. The customer reports that the laptop performance is slow. A technician checks the laptop and finds it has the maximum 8GB of RAM, an i5 processor, and a 5400 RPM magnetic hard drive. Which of the following is the BEST way the technician can improve the performance of the laptop?
A. Upgrade the memory in the laptop to 16GB.
B. Replace the 5400 RPM hard drive with a SSD.
C. Replace the i5 processor with an i7 processor.
D. Upgrade the operating system to Windows 8.1.