If $\overrightarrow{\mathrm{F}}=(60\hat{\mathrm{i}}+15\hat{\mathrm{j}}-3\hat{\mathrm{k}})\mathrm{N} \mathrm{and} \overrightarrow{\mathrm{v}}=(2\hat{\mathrm{i}}-4\hat{\mathrm{j}}+5\hat{\mathrm{k}})\mathrm{m}/\mathrm{s}$, then instantaneous power is : 

• A

  195 w

• B

  45 w

• C

  75 W

• D

  100 w