In , the literal factor is_______.
Explanation for correct option:
Option C
Literal factor means variable which are denoted by letters. For example etc.
So, in , the variable is .
Explanation for incorrect options
Option A
is not the variable as it is a number.
Option B
is not the variable as it is a number.
Option D
is not the variable as it is a number.
Therefore, the correct answer is option C.