In fopen(), the open mode "wx" is sometimes preferred "w" because. 1) – McqOptions

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1.	In fopen(), the open mode "wx" is sometimes preferred "w" because. 1) Use of wx is more efficient. 2) If w is used, old contents of file are erased and a new empty file is created. When wx is used, fopen() returns NULL if file already exists.
A.	Only 1
B.	Only 2
C.	Both 1 and 2
D.	Neither 1 nor 2
E.
Answer» C. Both 1 and 2

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In fopen(), the open mode "wx" is sometimes preferred "w" because. 1) Use of wx is more efficient. 2) If w is used, old contents of file are erased and a new empty file is created. When wx is used, fopen() returns NULL if file already exists.
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