This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which type of malignant melanoma has worse prognosis 
Select and explain. 
A. Nodular melanoma, B. Superficial spreading melanoma, C. Acral lentiginous melanoma, D. Lentigo maligna melanoma
A: Nodular melanoma
Answer: A: Nodular melanoma 
Explanation: Nodular melanoma is most aggressive and has worst prognosis,Well demarcated, smooth or nodular and pigmented tumour which may be amelanotic sometime.