Steve Has 18 Black Socks and 12 Blue Socks

Steve has 18 black socks and 12 blue socks.Every morning he pulls a sock at random from his drawer, then pulls a second sock at random, and wears both socks, regardless of their color.What is the probability he wears mismatched socks?

A) 0.248
B) 0.152
C) 0.352
D) 0.50