C-04-Q032mediumsingle_mcqIn Example 2, the given data are base BC=7.5BC = 7.5BC=7.5 cm, ∠YBC=45°\angle YBC = 45°∠YBC=45° and AB−AC=AB - AC =AB−AC=a555 cmb2.52.52.5 cmc7.57.57.5 cmd cm