In the text we developed Java code for traversing a linked list. Here is a, possibly flawed, approach for using a traversal to print the contents of the linked list of strings accessed through letters. Indicate the description that best matches the code. LLNode currNode = letters;

while (currNode != null)

{

System. out. println(currNode. getInfo());

if (currNode. getLink() != null)

currNode = currNode. getLink();

else

currNode = null;

}

a. Very good.
b. Correct but inefficient.
c. Correct but too complex.
d. Will bomb if list is empty.
d. Will bomb if list is not empty.

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.