Regardless of the number of fields used for row headings, at least ________ fields must remain available to complete the crosstab query

Which line in the following program will cause a compiler error?

``` 1 #include 2 using namespace std; 3 4 int main() 5 { 6 const int MY_VAL = 77; 7 MY_VAL = 99; 8 cout << MY_VAL << endl; 9 return 0; 10 } ``` a. line 6 b. line 7 c. line 8 d. line 9 e. there will be no compiler error

________ refers to the size and positioning of nodes in the scene graph.

a. Arrangement b. Layout c. Structure d. Configuration