General Medicine General a8fac8b5 When capillary and interstitial hydrostatic pressures are 30 mm Hg and 10 mm Hg, respectively, and colloid oncotic pressure in capillaries and in interstitium are 22 mm Hg and 5 mm Hg, respectively, how much is the net filtration pressure? A + 3 mm Hg B - 3 mm Hg C + 13 mm Hg D - 13 mm Hg