Feature which differentiates true from artificial bruise is

Feature which differentiates true from
artificial bruise is ?
a) Round shape with irregular margins
b) Irregular shape with regular margins
c) Swelling of surrounding area
d) Erythema of surrounding area
Correct Answer - A
Ans. is ‘a’ i.e., Round shape with irregular margins
Such “injury” is an artificial/false bruise that may be produced by
applying the juices of various irritant vegetable poisons.
Other agents that can produce artificial bruise may include madar
juice or Plumbago root. The juice, like vitriol, has been thrown on the
face with evil intention. Homicidal poisoning by internal
administration of the juice is very rare.