Q). What is the value of $\left[\tan \left(-750°\right)\times cot150°+\sin \left(\frac{19\mathrm{\pi }}{4}\right)-\cos \left(\frac{9\mathrm{\pi }}{4}\right)\right]$?
A. 1 - $\sqrt{2}$
B. 0
C. 1
D. $\sqrt{2}$ + 1