C is often accustomed explain the C: drive or perhaps the very first major hard drive on IBM appropriate computer systems. In Microsoft windows a person will get towards the C: drive by opening My Computer. In Windows this drive is generally defined as neighborhood Disk. Into the photo below, is a good example of the way the neighborhood Disk (C:) may try Microsoft windows 8.
Again two forms occur: (i.) modus ponendo tollens which by the affirmation of one alternative denies the other (A is either B or C; A is B; therefore it is not C: or either A is B, or C is D; A is B; therefore C is not D: or either A or B is C; A is C; therefore B is not C); (ii.) modus tollendo ponens which by the denial of the one, establishes the validity of the other alternative (A is either B or C; A is not B; therefore it is C: or either A or B is C; A is not C; therefore B is C: or either A is B, or C is D; A is not B; therefore C is D).