**Core Concept**
The patient's presentation of systemic lupus erythematosus (SLE), normocytic anemia, thrombocytopenia, lymphadenopathy, and splenomegaly, along with the presence of reticulocytosis, suggests a hematologic manifestation of SLE, specifically autoimmune hemolytic anemia (AIHA) with thrombocytopenia.

**Why the Correct Answer is Right**
The patient's laboratory findings and clinical presentation are consistent with AIHA, a condition characterized by the production of autoantibodies against red blood cell antigens. This leads to the premature destruction of red blood cells, resulting in anemia. The presence of reticulocytosis indicates an attempt by the bone marrow to compensate for the anemia by increasing red blood cell production. Thrombocytopenia in this context is likely due to the splenomegaly, which can cause sequestration of platelets, or autoimmune destruction of platelets.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the patient's presentation, which does not suggest a myeloproliferative neoplasm (MPN). MPNs are characterized by the overproduction of one or more blood cell lines, which is not consistent with the patient's normocytic anemia and thrombocytopenia.
**Option B:** While SLE can cause renal involvement, the patient's presentation does not suggest a nephritic syndrome, which would be characterized by hematuria, proteinuria, and hypertension.
**Option C:** This option is not relevant to the patient's presentation, which does not suggest a bleeding disorder. The patient's thrombocytopenia is likely due to autoimmune destruction or splenomegaly, rather than a bleeding disorder.

**Clinical Pearl / High-Yield Fact**
In patients with SLE, AIHA can be a presenting feature, and it is essential to consider this diagnosis in patients with anemia and thrombocytopenia, particularly in the context of reticulocytosis.

**Correct Answer: C. Autoimmune Hemolytic Anemia**