A female，age 58，underwent laparoscopic common duct exploration and T-duct drainage 8 hours ago for choledocholithiasis complicated by acute purulent cholangitis. The patient''s BP is 11.5/8.8kPa（86/66mmHg） and pulse 118/min. What position should she assume?
A: Trendelenburg position
B: Horizontal position
C: Right lateral position
D: Horizontal position of head with lower extremities elevated by 10°
E: Head and trunk elevated by 30°and lower extremities raised