Answer:
The correct options are B and C.
Explanation:
Graph A represents the parent quadratic function.
![f(x)=x^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/gd13a4u7jfhi2500q0c3xp0i73vo2psy4f.png)
The vertex from of a parabola is
![y=a(x-h)^2+k](https://img.qammunity.org/2020/formulas/mathematics/high-school/7xiq973pej7bis77rj649g420rebwvc4wx.png)
where, (h,k) is vertex and a is a constant.
If |a|>1, then parent function is stretched by factor a and If 0<|a|<1, then parent function is compressed by factor a.
The vertex of graph B is at (1,0). So the function of graph B is
![g(x)=a(x-1)^2+0](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rhmyen5hum911hql54ta3dhf420bkjqszr.png)
![g(x)=a(x-1)^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vdyiwov6ishlrk4pao5thmyygjolg0rpyt.png)
Graph B passes through (3,0), so
![3=a(0-1)^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5s4k3lpsih0qfhqcs6nrb1aselt4f8gvt9.png)
![3=a](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7a78uqk5xupu3ykf72zptpojvqenzypojk.png)
The value of a is 3. So, the function of graph B is
![g(x)=3(x-1)^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/l4imj4lpml42uuy6bbi7s5tr5r36b62l00.png)
If means the graph A stretched vertically by factor 3 and translate 1 unit to the right.
Therefore the correct options are B and C.