Course: Microeconomics - Long Run Production Function Given the production function X = 3K + L, so the Total Long Run Cost (LRTC) function will be:

a) TC (X) = p_K(X/3) + p_L(X)

b) TC (X) = 3Xp_K + X/p_L c) TC(X) = min{3Xp_K ; Xp_L}

d) TC(X) = min{xp_K/3 ; Xp_L}

NOTE: p_K and p_L are factors price for K and L, respectively

Please I need the development to get the correct alternative. Thank you :D