<prompt> Feature which differentiates true from aificial bruise is -Round shape with irregular marginsIrregular shape with regular marginsSwelling of surrounding areaErythema of surrounding area  <response>: The synopsis of forensic medicine toxicology ; Dr k.s.narayan ; 28 th edition Pg .no. 110 Table 8-3 Shape of true bruise is usually round while that of aificial bruise is irregular .Erythema swelling seen in the surrounding area in case of aificial bruise not in true bruise .In true bruise erythema and swelling is seen in the site . 