A 53 years diabetic,hypertensive female comes with this macular blackish lesion only

A 53 years diabetic,hypertensive female comes with this macular blackish lesion only present both lower limbs.There is no itching or any other symptom.
Whis is diagnosis?

Diabetic dermopathy no treatment needed

Macular amylodosis

Shamberg disease

Post inflammatory pigmentation

Confllwent and reticulate disease.

LSC

Lichen Amylodosis