What is correct about UDC scheme of classification ?
(1) It is faceted classification scheme.
(2) Paul Otlet and Henry La Fontaine are associated with it.
(3) It has relative index.
(4) It use pure notation.
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A(2) and (3) are correct.
B(1) and (2) are correct.
C(3) and (4) are correct.
D(1) and (3) are correct.