The sum of the numerator and denominator of a fraction is 3 less than twice the denominator . If the numerator and denominator are decreased by 1, the numerator becomes half the denominator. Then the faction is

Question

$(A) \;\large\frac{3}{7} \\(B)\; \large\frac{4}{7} \\(C)\; \large\frac{1}{4} \\(D)\;\large\frac{1}{7} $