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Here are several function members of a class. Tell whether each may be used as an l- value, only, an r-value only or both. B is a class that has mutators.

a)``` //declarations of these appear together in the //definition of class A int& A::f( ){ /* */} const int& A::f( )const{ /* */} ``` b)``` const int& A::f( ){ /* */} ``` c)``` const B A::f( ){ /* */} ``` d)``` B A::f( ){ /* */} ```

Suppose your target audience uses a broadband connection with a speed of 6 Mbps. What is the maximum file size for your 30-second video to have a smooth playback using pseudostreaming on the Web? Show your calculations.

What will be an ideal response?