The only choice with the correct denominator is
![\bf C.\quad\dfrac{n^2-10n+19}{2n-10}](https://tex.z-dn.net/?f=%5Cbf%20C.%5Cquad%5Cdfrac%7Bn%5E2-10n%2B19%7D%7B2n-10%7D)
_____
For multiple choice questions, it works well to eliminate answers that cannot possibly be right, then look at what remains. Here, only one answer remains.
SADNADDDDDDDDDDDDDSLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDNNNNNNNNNNNNNNNNNNNNNNNNNNNNEL
Answer:
0
Step-by-step explanation:
Eliminate the opposite