GMAT Data Sufficiency
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Source: GWD
Level: 4
If f is the function defined by f(x) = 2x for x ≥ 0 and 
for x ＜ 0, what is the value of f(c) ?
(1) |c|= 2
(2) c ＜ 0
- A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- D EACH statement ALONE is sufficient.
- E Statements (1) and (2) TOGETHER are NOT sufficient.