31. A 45-year-old woman presents with a 2-cm firm breast mass. Core biopsy reveals invasive ductal
carcinoma that is estrogen receptor ER-positive, progesterone receptor PR-positive, and HER2- t-a- entor ER-nositive provesterone receptor PR-positive, and HER2- sgd hard fire thie arofile and rsis? negative. Which molecular subtype best fits this profile and prognosis?

(A) Luminal A subtypе
(B) Luminal B subtype

(C) HER2-enriched subtype
(D) Basal-like (triple-negative) subtype