Ans: C
A is not true. Note that the distances between the vertex and the $x$-axis of the two graphs are the same. Therefore, there is no enlargement along $y$-axis.
A is not true. Note that the distances between the vertex and the $x$-axis of the two graphs are the same. Therefore, there is no enlargement along $y$-axis.
B is not true. Note that the distances between two $x$-intercept of the two graphs are the same. Therefore, there is no enlargement along $x$-axis.
D is not true. Note that the graph undergoes a reflection about $x$-axis.
Therefore, C is the answer.
