A 42-year-old woman from rural Maharashtra presents with postcoital bleeding and vaginal discharge for 3 months. She is a known tobacco chewer and had her first child at age 16. On speculum examination, a friable, bleeding mass is seen on the cervix. Pap smear shows atypical squamous cells of undetermined significance (ASCUS). Cervical biopsy confirms squamous cell carcinoma. MRI pelvis shows a 4 cm lesion confined to the cervix with no parametrial involvement, negative pelvic lymph nodes, and normal upper abdomen. What is the FIGO 2009 stage of this cervical cancer?