In . . . . . . . . allotrope of carbon , the carbon atoms are arranged in the shape of a football. A. C – 50 B. C – 40 C. C – 60 D. C – 30

The correct answer is C. C – 60.

C60 is a fullerene, a type of allotrope of carbon with a cage-like structure. It is the most stable fullerene and is also known as buckminsterfullerene or buckyball. The structure of C60 is similar to that of a soccer ball, with 60 carbon atoms arranged in 12 pentagons and 20 hexagons.

The other options are incorrect because they do not correspond to any known allotropes of carbon.