**Core Concept**
The prognosis of schizophrenia is influenced by various factors, including the presence of positive symptoms, duration of untreated psychosis, and patient's social and cognitive functioning. **Good prognostic factors** are those that suggest a better outcome, such as recovery or significant improvement in symptoms.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the general good prognostic factors in schizophrenia, which include late onset, acute onset, presence of precipitating factors, and good social and cognitive functioning.

**Why Each Wrong Option is Incorrect**
**Option A:** No information is provided for this option, however, typically good prognostic factors include those mentioned above.
**Option B:** Similarly, no information is provided for this option, but we can say that poor prognostic factors include early onset and poor social functioning.
**Option C:** Again, no information is provided, but generally, a good prognosis is associated with the absence of negative symptoms.
**Option D:** No information is provided for this option, but we can say that a good prognosis is often linked to the presence of positive symptoms, as these are more responsive to treatment.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that **early intervention** and treatment are crucial in improving the prognosis of schizophrenia.

**Correct Answer:** Not provided in the query.