**Core Concept**
Amphotericin B (Ampho B) is an antifungal medication that can cause renal dysfunction, leading to the excretion of abnormal amounts of certain compounds in the urine.

**Why the Correct Answer is Right**
The orange coloration of urine is due to the presence of urobilinogen, a byproduct of heme degradation. When Ampho B causes renal tubular damage, it can lead to the impaired reabsorption of urobilinogen, resulting in its increased excretion in the urine. This is because Ampho B disrupts the normal functioning of the renal tubules, particularly the proximal convoluted tubule, leading to the loss of essential nutrients and substances, including urobilinogen.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the context of Ampho B causing orange-colored urine.
**Option B:** Other antifungal medications, such as fluconazole, do not typically cause orange-colored urine.
**Option C:** While some medications can cause abnormal urine colors, Ampho B is specifically associated with orange-colored urine due to its effect on urobilinogen reabsorption.

**Clinical Pearl / High-Yield Fact**
Ampho B-induced renal dysfunction can also lead to hypokalemia, hyponatremia, and metabolic acidosis, making it essential to monitor renal function closely in patients receiving this medication.

**Correct Answer:** C. Amphotericin B.