6. Write a function with one positive int parameter called n. The function will write 2n- 1 integers (where is the exponentiation operation). Here are the patterns of output for various values of n n 1: Output is: 1 n 2: Output is: 1 21 n-3: Output is: 1 2131 21 n4: Output is: 121312141213121 And so on. Note that the output for n always consists of the output for n-1, followed by n itself, followed by a second copy of the output for n-1. (10 points) 7. Consider the following definition template Item maximal (Item a, Item b) if (a > b) return a; else return b; What restrictions are placed on the Item data type for a program that uses the maximal function? (3 points) A. The Item data type must be either int, double, or float. B. The Item data type must be one of the built-in C++ data types C. The Item data type must have a copy constructor and a >operator defined. D. None of the above restrictions apply