Sentence 1: During the same period, passenger arrivals increased by 42 percent, from 304 million to 431 million.

Sentence 2: The leap from 304 million to 431 million was due to increased levels of customer service.
pick from the following.
(i) yes.
(ii) it is not possible to tell.
(iii) no.
Is this second sentence entailed by the first sentence?
(ii)