Consider a vector $\mathbf{F}=4\hat{\mathbf{i}}-3\hat{\mathbf{j}}$. Another vector perpendicular to F is

• A

  $4\hat{\mathbf{i}}+3\hat{\mathbf{j}}$

• B

  $6\hat{\mathbf{i}}$

• C

  $7\hat{\mathbf{k}}$

• D

  $3\hat{\mathbf{i}}-4\hat{\mathbf{j}}$