**Core Concept**
The management of non-immunized diphtheria contacts involves preventing the spread of the disease and protecting the contacts from infection. **Diphtheria** is a serious bacterial infection caused by **Corynebacterium diphtheriae**.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the general approach to managing non-immunized diphtheria contacts. This typically includes **prophylactic antibiotics** to prevent the development of the disease and **vaccination** to provide long-term immunity.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, we cannot accurately determine its correctness.
**Option B:** Similarly, without the details of option B, its validity cannot be assessed.
**Option C:** Again, lacking the specifics of option C, we cannot evaluate its correctness.
**Option D:** The same applies to option D, as the details are not provided.

**Clinical Pearl / High-Yield Fact**
In managing diphtheria contacts, it's crucial to remember that **prophylactic antibiotics** like **erythromycin** or **penicillin** can be used to prevent the disease in close contacts.

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