Which correctly lists the weeks associated with each trimester? first trimester (weeks 1–12); second trimester (weeks 13–26); third trimester (weeks 27–40) first trimester (weeks 27–40); second trimester (weeks 13–26); third trimester (weeks 1–12) first trimester (weeks 1–3); second trimester (weeks 4–6); third trimester (weeks 7-9) first trimester (weeks 7–9); second trimester (weeks 4–6); third trimester (weeks 1–3)