**Core Concept**
Hormone-dependent fungating carcinoma of the breast with metastasis to the lung in a premenopausal female patient requires a comprehensive treatment approach that addresses both the primary tumor and the metastatic disease. This involves a combination of local and systemic therapies to manage symptoms, control tumor growth, and improve quality of life.

**Why the Correct Answer is Right**
The treatment of hormone-dependent breast cancer in a premenopausal woman involves the use of hormone therapy, such as tamoxifen or aromatase inhibitors, to block the effects of estrogen on cancer cells. In addition to hormone therapy, chemotherapy and targeted therapy may be used to treat the metastatic disease in the lung. For a fungating carcinoma, local control of the tumor is also essential, which can be achieved with radiotherapy or surgery.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because primary chemotherapy is not the first-line treatment for hormone-dependent breast cancer with metastasis to the lung, especially in a premenopausal woman.
**Option B:** This option is incorrect because surgery alone is not sufficient to control the metastatic disease in the lung, and local control of the tumor is also essential.
**Option C:** This option is incorrect because radiotherapy alone may not be sufficient to control the tumor and the metastatic disease in the lung.

**Clinical Pearl / High-Yield Fact**
In premenopausal women with hormone-dependent breast cancer, hormone therapy is a crucial component of treatment, and it's essential to consider the use of ovarian suppression or ablation to further reduce estrogen levels and improve treatment outcomes.

**Correct Answer: C. Hormonal therapy + chemotherapy + radiotherapy.**