Question 44 The main difference between a pure virtual function and a virtual function is: Not yet answered Marked out of 1.00 P Flag question Select one: a. both used to indicate asbtract classes O b. That a pure virtual function cannot have an implementation O c The return type O d. The member access specifier Question 45 Pointers cannot be used to: Not yet answered Marked out of 1.00 Select one: a. Reference values directly Ob. Contain memory addresses. Flag question O c. Pass an argument by reference O d. Manipulate dynamic data structures