[单选题]
Which functional grodcdswrqvoku /-m j c:5m*r r00p mufi6a(;7 w9ups arr(dyu-g lf6/ion hg .,e present in this molecule?
I. Amine
II. Ester
III. Ether
A. $I$ and $II$ only
B. $I$ and $III$ only
C. $II$ and $III$ only
D. $I$, $II$, and $III$
参考答案: A
本题详细解析: Explanation:
$NH_2$ is the amine functional group, $RCOOR′$ is the ester functional group.