Question

Consider using a datacontractresolver if you are using datacontractserializer or add any types not known statically to the list of known types - for example, by using the knowntypeattribute attribute or by adding them to the list of known types passed to the serializer.

Answer 1

Answer:

Here is your answer In nlogk it can be done by creating a min heap of size k and adding all the top – elements of all the stacks. After extracting the min , add the next element from the stack from which we have got our 1st minimum.Mark as Brainliest