Is this sentence periodic, cumulative, or inverted. What is the impact of using that pattern?

... mounting a coach with a ship-load of men, animals, and merchandise behind him, he darts through the country, from town to town, like an eagle or a swallow through the air.

The answer is A: Periodic. In this kind of sentence, the main idea is placed at the end, with the purpose of emphasis. In the example, we will only know that "he darts through the country, from town to town" after some information is given: " ... mounting a coach with a ship-load of ... behind him". And after, some modifiers are added to support the main idea.