8. A sample of an ideal gas is taken through the cyclic process abca shown in the figure. The scale
of the vertical axis is set by = 15 kPa and = 5 kPa. At point a, T = 200 K. What is the
temperature of the gas at point c?
(A) 400 K
(B) 600 K
(C) 1419 K
(D) 1800 K
(E) 4258 K