下列代码段执行后, season的值为()int month = 3;String season = "";switch (month) { case 12: case 1: case 2: season = "winter"; break; case 3: case 4: case 5: season = "spring"; break; case 6: case 7: case 8: season = "summer"; break; case 9: case 10: case 11: season = "autumn"; break;}
A. winter
B. spring
C. summer
D. autumn