According to Millman’s Theorem, if there are n current sources with n internal conductances respectively, are in series, then the value of equivalent conductance is?

• A. G’=R1+R2+⋯Rn
• B. G’=1/(1/R1+1/R2+⋯1/Rn)
• C. G’=1/((R1+R2+⋯Rn))
• D. G’=1/R1+1/R2+⋯1/Rn