Pressure gauge A reads 6 kPa absolute. What is the pressure in the closed air space B (in kPa)? The manometer fluid is N ed oil with a specific gravity (SG) of 0.827. The value of gamma is 9780 N/m^3, and the heights h_1, h_2, h_3, and h_4 are all 2 m. Which of the following options represents the correct pressure in the closed air space B?

A) 6 kPa
B) 8 kPa
C) 10 kPa
D) 12 kPa