\[2\cos x-\cos 3x-\cos 5x=\] [Roorkee 1974]

• A. \[16{{\cos }^{3}}x{{\sin }^{2}}x\]
• B. \[16{{\sin }^{3}}x{{\cos }^{2}}x\]
• C. \[4{{\cos }^{3}}x{{\sin }^{2}}x\]
• D. \[4{{\sin }^{3}}x{{\cos }^{2}}x\]