Explanation:

- Let's denote the son's current age as $x$ and the father's current age as $2x$ since the father is now twice as old as his son.

- Twenty years ago, the son's age was $x-20$ and the father's age was $2x-20$.

- At that time, the father was twelve times as old as the son, so we have the equation: $2x-20=12(x-20)$.

- Solving the equation:

$2x-20=12x-240$

results in

$220=10x$,

so $x=22$.

- Therefore, the father is $2x=44$.

- Let's go through the options:

- Option 1: 22 and 44 years.

- Option 2: 27 and 54 years.

- Option 3: 33 and 66 years.

- Option 4: 15 and 30 years.

- Based on calculations, the present ages are indeed 22 and 44 years.