Differentiate (3 cos⁡x)x with respect to x.

• A. (3 cos⁡x)x (log⁡(3 cos⁡x)+x tan⁡x)
• B. (3 cos⁡x)x (log⁡(3 cos⁡x)+tan⁡x)
• C. (cos⁡x)^x (log⁡(3 cos⁡x)-x tan⁡x)
• D. (3 cos⁡x)x (log⁡(3 cos⁡x)-x tan⁡x)