Which of the following straight lines are both tangent to the circle $$x^{2} + y^{2} − 6x + 4y − 12 = 0$$

A

4x + 3y − 19 = 0, 4x + 3y + 31 = 0.

B

4x + 3y + 19 = 0, 4x + 3y − 31 = 0.

C

4x + 3y + 19 = 0, 4x + 3y + 31 = 0.

D

4x + 3y − 19 = 0, 4x + 3y − 31 = 0.