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3 The chemical compositions of two substances, W and X, are given.

W Na(AISI³)O8
X Ca(Al₂Si₂)08

Which statements are correct?
1 W and X contain the same amount of oxygen.
2 W contains three times as much silicon as X.
3 X contains twice as much aluminium as W.
A) 1 and 2 B) 1 and 3 C) 2 and 3 D) 1, 2 and 3​