See the multi-choice question below:

Sentence 1: Arriving in 1608, the British took five years to get their foot in the Indian door, at the western port of Surat, north of Bombay.

Sentence 2: The British got their foot in the Indian door in 1613, said the teacher.

If the first sentence is true, then is the second sentence true?
Choices: a. yes. b. it is not possible to tell. c. no.
b.