Final answer:
Acute Myeloid Leukemia patients typically experience thrombocytopenia, resulting in decreased platelet counts, prolonged clotting times, and increased bleeding and bruising.
Step-by-step explanation:
Acute Myeloid Leukemia patients have a decreased platelet count, which leads to longer clotting times and increased bleeding and bruising. Therefore, the correct answer is B. Decreased, increased. This condition is known as thrombocytopenia, a common manifestation in Acute Myeloid Leukemia (AML) due to the impaired production of platelets. Since platelets are essential for blood clotting, reduced numbers of platelets lead to increased risks of bleeding and the development of bruises from even minor injuries or spontaneous bleeding.