Q$7)$ Answer the following true$/$false$.$ If a statement is false give a brief explanation why.

a$)$ When memory is closer to the CPU, it's usually faster than memory farther from the CPU.

b$)$ Memory only contains the data such as variables and files.

c$)$ Technologies that allow high capacities are faster on average.

d$)$ All systems have a word size of $32$ bits.