\(a, b, c,\) and \(d\) are positive consecutive integers and \(a < b < c < d.\) If the product of \(b, c,\) and \(d\) is

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\(a, b, c,\) and \(d\) are positive consecutive integers and \(a < b < c < d.\) If the product of \(b, c,\) and \(d\) is twice that of \(a, b,\) and \(c,\) then \(bc =\)

A 2
B 6
C 12
D 20
E 30

[spoiler]OA=D[/spoiler]

Source: Manhattan GMAT
Source: — Problem Solving |