An ideal Brayton cycle (1–2–3–4) consisting of two isentropic and two isobaric processes is shown in the \(T\)–\(s\) plot, where \(T\) is the temperature and \(s\) is the specific entropy of the system. Which one of the following plots represents the corresponding actual cycle \(1{–}2'{–}3{–}4'\) (denoted by dashed lines) between the same two pressures \(p_1\) and \(p_2\)?
