What does α represent in the below equation?\(K_{biphasic} = K_w (\frac{1+αP_B}{1+αP_A})\)

• A. \(\frac{[B_w]}{[A_w]}\)
• B. \(\frac{V_{org}}{V_w}\)
• C. \(\frac{[B_t]}{[A_t]}\)
• D. \(\frac{[B_{org}]}{[B_w]}\)