Check the picture. There are 2 interior common tangents, and 2 exterior common tangents which can be drawn.
Answer: 4
It would be either C or A, sorry I cant help anymore than that
<span>The doubling time is the period of time
required for a quantity to double in size or value. It is applied to
population growth, inflation, resource extraction, consumption of goods,
compound interest, the volume of malignant tumours, and many other
things that tend to grow over time.</span>