68 year old male breast cancer presented to my Opd yesterday. Image given below

68 year old male breast cancer presented to my Opd yesterday. Image given below. In addition, he had matted lymph nodes in right axilla and a single hard ipsilateral supraclavicular lymph node. No distant metastasis on imaging.

Question 1 - what is the stage?
A. T4aN3aM0
B. T4bN2bM0
C. T4bN3cM0
D. T4aN3cM0

Question 2 - You can notice Lymphedema in the right arm. Regarding upper Lymphedema what is not true?
A. It can be reduced by wearing a compression sleeve/ garment
B. Long standing Lymphedema can give rise to angiosarcoma, also known as Stewart reeves syndrome
C. Axillary lymph node clearance above the axillary vein during mastectomy increases the risk of Lymphedema
D. Overall primary Lymphedema of the upper limb is more common than secondary Lymphedema