please answer these questions. thanks.

a) Choose the correct options Blockchain is using a cryptographic hash function which is a hash function that has what additional properties? collision resistance non-uniformity irreversibility prelmage resistance b) A hash pointer is The result of hashing the value of a linked list pointer A pointer to some data together with a hash of that data A pointer to some data's hash code The name that the blockchain is using to refer to a regular linked list pointer c) Each block in bitcoin's blockchain is using what kind of data structure? Dynamic Array Hash Table Binary Heap Quad Tree Binary Search Tree Doubly Linked List O Hash Tree