22 Given an HttpServletRequest request and an httpServletResponse response: 41. HttpSession session = null;  42. / / insert code here 43. if (session = = null) {  44. / / do something if session does not exist  45. } else {  46. / / do something if session exists  47. }To implement the design intent, which statement must be inserted at line 42?
(A) session = response.getSession ();
(B) session = request.getSession ();
(C) session = request.getSession (true);
(D) session = request.getSession (false);
(E) session = request.getSession ("jsessionid");