In which of the following cases it is possible to obtain diffrent results for-call-by-reference and -call-by-name parameter passing:

(A) Passing an expression as a parameter
(B) Passing an array as a parameter
(C) Passing a pointer as a parameter
(D) Passing an array element as a parameter

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    (C) use of library routines facilitate bottom up methodology
    (D) both a and c above

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    (A) it uses stating allocation for storing variables
    (B) it uses dynamic allocation for storing variables
    (C) stacks are not available in all machines
    (D) it is not possible to implement recursion in all machines

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    (A) spacifing the syntex of a language
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