28岁，停经8周，下腹痛及 * * 出血3天，血量少于月经量，未见明显组织物排出。妇科检查：宫口闭，宫体如孕50天大小，右侧卵巢直径2～3cm，触痛，此例诊断为（）

A.先兆流产

B.难免流产

C.不全流产

D.异位妊娠

E.稽留流产

Given the following possibilities, which one results in an increase in total consumer expenditures（）

A. demand is unitary elastic and price falls.

B. demand is elastic and price rises.

C. demand is inelastic and price rises.