In C++ Lenguage Please !!!

After the following C++ code executes: int num[] = { 1,2,3,4,5,6,7,8 }; vector vec(num, num + 8); vector int>::iterator iter; iter = vec.begin(); Question 9 How is the vector after executing the instruction vec. erase(vec.end());? {1, 2, 3, 4, 5, 6, 7} o {1, 2, 3, 4, 5, 6, 8} {1, 2, 3, 4, 5, 6, 7, 8} Runtime Error Question 10 How is the vector after executing next instructions? iter = vec.end()-1; vec.erase(iter); {1, 2, 3, 4, 5, 6, 7} {1, 2, 3, 4, 5, 6, 8} {1, 2, 3, 4, 5, 6, 7, 8} Runtime Error