2. It is known that A's soda water capacity is $50\%$ more than B's, and C's soda water capacity is $25\%$ more than B's. Then the relationship between A's and C's soda water capacities is that A's is ( ) more than C's.
(A) $20\%$
(B) $25\%$
(C) $45\%$
(D) $75\%$
(E) $100\%$
2. A.

Let the capacities of soda water A, B, and C be $x$, $y$, and $z$ respectively. According to the problem,
$$
\begin{array}{l}
x=(1+50 \%) y, z=(1+25 \%) y \\
\Rightarrow \frac{x}{z}=\frac{6}{5} .
\end{array}
$$

Therefore, A is $20 \%$ more than C.