3. (10 pts) Write YES or NO for each of the following questions. (a) Is O(n) O(n) + O(n2) true? (b) Is (n) +0(n ) = 0(n2) true? (c) Is nn+3 (nn+3) true? (d) Is nn+3 E ((n + 3)) true? (e) Is O(n) + O(n3) = 0(n3) true