A 2 μF capacitor is shunted by a 1 kΩ maintained at temperature 400 K. The rms noise voltage across the capacitor over the entire frequency band is:

• A. 6.25 x 10-8 V
• B. 5.25 x 10-6 V
• C. 6.25 x 10-6 V
• D. 5.25 x 10-8 V