A customer built a computer with the following specifications: ✑ Single hexa-core processor ✑ 8GB DDR4 memory ✑ 256GB SSD drive ✑ Built-in graphics card ✑ 32-bit Windows OS ✑ Audio editing software The computer seems to be working, but the OS reports only 3.5GB of RAM is available. Which of the following would correct the issue? 

Answer options:

A. 16GB DDR4 memory
B. 64-bit Windows OS
C. Dual hexa-core processors
D. 512GB SSD drive

B