A Carnot engine operating between temperatures T1 and T2, has efficiency 1/6. When T2, is lowered by 62 K, its efficiency increases to 1/3. Then, T1 and T2, are respectively
(a) 372 K and 330 K
(b) 330 K and 268 K
(c) 310 K and 248 K
(d) 372 K and 310 K
