See the multi-choice question below:

Sentence 1: After a moment's reflection she sat down and wrote a note, weighing each word as she did so.

Sentence 2: She'd put a lot of thought into writing the letter.

If the first sentence is true, then is the second sentence true?
Select from the following. (1). yes. (2). it is not possible to tell. (3). no.
(1).