Five sentences related to a topic are given below. Four of them can be put together to form a meaningful paragraph. Select the odd one.

1. The Eiffel Tower is one of the most recognizable structures in the world.

2. Vitamins help in boosting the immune system of our body.

3. The Eiffel Tower was designed by the French engineer Gustave Eiffel for the 1889 Exposition Universelle.

4. It has become a global cultural icon of France and is visited by millions of tourists every year.

5. The iconic structure is made of iron and stands at an impressive height of 330 meters.