A room is filled with saturated steam at 100°C. Now a 5-kg bowling ball at 25°C is brought to the room. Heat is transferred to the ball from the steam, and the temperature of the ball rises to 100°C while some steam condenses on the ball as it loses heat (but it still remains at 100°C). The specific heat of the ball can be taken to be 1.8 kJ/kg • C. The mass of steam that condensed during this process is
(a) 80 g
(b) 128 g
(c) 299 g
(d) 351 g
(e) 405 g