**Core Concept**
Pseudo ligature marks are a type of non-vital sign of strangulation, which are superficial skin marks that resemble ligature marks but are not caused by a physical ligature. These marks can be caused by various factors, including skin folds, tight clothing, or even a tight collar.

**Why the Correct Answer is Right**
Pseudo ligature marks are often seen in conditions where there is intense pressure on the skin, such as in cases of neck compression or entrapment. The skin may be compressed for a prolonged period, leading to the formation of these superficial marks. In contrast to true ligature marks, pseudo ligature marks are not caused by a physical ligature and do not indicate strangulation.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because pseudo ligature marks can indeed be seen in cases of strangulation, making it an incorrect choice.
**Option C:** This option is incorrect because pseudo ligature marks are not a specific feature of asphyxia due to hanging; they can occur in various conditions where there is intense pressure on the skin.

**Clinical Pearl / High-Yield Fact**
When evaluating a case of alleged strangulation, it's essential to distinguish between true ligature marks and pseudo ligature marks. Pseudo ligature marks can be caused by various factors, including skin folds or tight clothing, and do not necessarily indicate strangulation.

**Correct Answer:** A. This option is incorrect because pseudo ligature marks can indeed be seen in cases of strangulation, making it the exception among the listed options.