Three resistors R₁, R₂ and R₃ (R₁ > R₂ > R₃), are connected to a battery of voltage V such that the circuit generates maximum heat per unit time. Which one among the following is the correct circuit combination for this?

 (a) R₁, R₂ and R₃ are connected in series combination

(b) R₁, R₂ and R₃ are connected in parallel combination
(c) R₁ and R₃ are connected in parallel and R₂ is connected in series to the combination
(d) R₁ and R₃ are connected in series and R₂ is connected parallel to the combination