Which of the following are Open Source Content Management System ?
(1) Drupal
(2) Joomla
(3) Atex
(4) Open CMS
A(1) and (2)
B(1), (2), (4)
C(1), (3), (4)
D(2), (3), (4)
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A(1) and (2)
B(1), (2), (4)
C(1), (3), (4)
D(2), (3), (4)