A 78 y.o. M patient reports chronic infections, bruising, fatigue, SOB, and fevers. He has a history of rectal adenocarcinoma and completed concurrent chemotherapy/radiation earlier this year. His CBC shows Hgb 7.5, PLT 88, WBC 1.2, ANC 0.8, and peripheral smear shows dysplasia. What additional work-up would you anticipate for this patient? Group of answer choices
A) No additional work-up is required, these are expected sequela of his oncologic treatment
B) Repeat CBC/CMP/peripheral smear in eight weeks
C) Colonoscopy and fecal occult blood test
D) Bone marrow biopsy and flow cytometry