Find the amplitude, period, vertical translation, and phase shift for the following trigonometric function.
y = cot (x/4 - 5π/8)

• A. Amplitude: None, Period: 4π, Phase shift: 5π/2 unit to the left, and Vertical shift: None
• B. Amplitude: None, Period: 4π, Phase shift: 5π/2 unit to the right, and Vertical shift: None
• C. Amplitude: None, Period: π/4, Phase shift: 5π/2 unit to the right, and Vertical shift: None
• D. Amplitude: None, Period: 4π, Phase shift: 2π/5 unit to the left, and Vertical shift: None

Answer: (B)