The total resistance Zᵣ in a circuit is given by zᵣ = z₁z₂/z₁+z₂, where z₁ = 50 + 60i and z₂ = 40 - 25i. What is the total resistance in standard form?
O 51.673 - 2.764i
O 39.964 - 2.764i
O 38.097 - 2.038i
O 12.4 + 12.509i