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A program relates to a computer in which of the following ways?

a$.$ It tells the computer how to transfer data from one networked device to another.

b$.$ It establishes the correct language in which the system unit relates to peripheral devices.

c$.$ It identifies whether the computer acts as a client or a server.

d$.$ It provides step$-$by$-$step directions for performing a specific task in a language the computer can understand.