Which is true about isupper(c), where c is an int that can be represented as an unsigned char or EOF.isupper(c) returns?

Both Non-zero if c is upper case & 0 if c is not upper case

Which is true about isupper(c), where c is an int that can be represen

1.	Which is true about isupper(c), where c is an int that can be represented as an unsigned char or EOF.isupper(c) returns?
A.	Non-zero if c is upper case
B.	0 if c is not upper case
C.	Nothing
D.	Both Non-zero if c is upper case & 0 if c is not upper case
Answer» E.

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Which is true about isupper(c), where c is an int that can be represented as an unsigned char or EOF.isupper(c) returns?

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