In Metabolic conditions within muscle capillaries, such as increased H+, CO2, lactate, and adenosine buildup will promote increased blood flow via: _____
A. Stimulating factors like Ca2+
B. Non-endothelial relaxing factors (like Nitric Oxide 'NO')
C. Endothelial-derived relaxing factors (EDRFs) (like Nitric Oxide 'NO')
D. Stimulating factors like adenosine