Reynaldo and Apple are training a new analyst, Norah Spears. They ask Spears what she knows about duration and convexity. Spears replies with four statements:Which of the following regarding Spears’ statements is TRUE()

A. Spears is correct with respect to all four statements.

B. Spears is correct with respect to Statement 2, but incorrect with respect to Statement 4.

C. Spears is correct with respect to Statement 3, but incorrect with respect to Statement 1.

患儿男，生后2天，出生体重为2400g。因吸入性肺炎入院，入院时患儿呼吸急促，口唇稍发绀。即置于辐射保暖床上抢救。

该患儿吸氧的流量应选择每分钟为（）

A.1L

B.2L

C.3L

D.4L

E.5L