You’re a 4th year medical student on a Oncology elective with Dr. Cuttem, who primarily treats skin cancers. You start the day with a review of the staging of melanoma. Dr. Cuttem asks you, if you had a patient with melanoma with the following characteristics: Primary tumor 3.1 mm depth with no ulceration, involvement of 3 lymph nodes, one of which is clinically detectable, and no metastasis. What TNM stage would it be?