$\"\"$

The polar equation is $\"\"$

The general form of polar equation is $\"\"$ .

Compare the polar equation with general form .

Here $\"\"$ and $\"\"$ .

Since $\"\"$ , the polar equation is parabola.

The directrix of the polar equation $\"\"$ .

Hence the graph of the parabola is opens vertically upwards..

Observe the graphs:

The correct choice is option $\"\"$ . $\"\"$

The correct choice is option $\"\"$ .