Context: : ) I spent the next 4 years at that size -- not really having any trouble maintaining it . When I got pregnant with Jeremie at 20 -- well -- things had changed . I was mostly immobile and I developed an unhealthy love affair with sandwiches . I was packing on the pounds like it was on sale at Walmart . Towards the end of my pregnancy I had to see the doctor weekly . One week I put on 8 lbs .

Question: Why did the writer put on 8 lbs in one week ?
Options:
0. Because she had no trouble maintaining her weight .
1. None of the above choices .
2. Because her child was a boy .
3. Because she was eating a lot of food .
Answer: 3