[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/Dsgr8.jpg


Source:My coaching DPP



A)$112$

B)$92$

C)$82$

D)$102$

I found $5^2+3^2-4^2=18$
, $7^2+5^2-3^2=65$. So, $?=8^2+6^2-5^2=75$ which is not in option. Anyone please help.