Explanation:

PC is a widely recognized acronym in computing, universally standing for "Personal Computer." This term refers to a general-purpose computer whose size, capabilities, and original sale price make it useful for individuals, and which is intended to be operated directly by an end-user without the need for an intervening computer operator. Options (b) "Private computer" and (c) "Public computer" are not standard or recognized interpretations of the acronym PC in the field of computer science or technology. Option (d) is incorrect because only (a) is the correct interpretation, making the combination with (b) invalid. Option (e) is incorrect as (a) is definitively the correct answer.