please answer both please

The big-O notation for f(n) = (nlogn + n2)(n^3 + 2) is __---_? Question 25 Not yet answered Marked out of 100 p Flag question Select one: a. O(n^4) b. O(3n) c. On^2) d. On^5) In an array-based implementation of the ADT list, what is the performance of adding an entry at the end of the list when the array is not resized Question 26 Not yet answered Marked out of 1.00 Flag question Select one: A O(1) ( B. blog n) 9 C. O(n) D. On