4. Jerry has approached you with a series circuit problem. He's trying to figure out the electricity for a new circuit in his house. He needs to find the total resistance. Which equation should Jerry use? A.R=R₁ + R₂ + R₂ B. R=1/R₁+1/R₂ + 1/R C. R=1/R₁ R₂ R D. R=R₁ R₂ R₂​