The result should be in C.

Problem 2: Write a function that concatenates two strings. You are allowed to use strlen() from string.h. Do not use strcat(). The function must have the following properties: 1. Name: ConcatenateStrings 2. Return type: nothing 3. Argument 1 - Input type: Non-mutable pointer to a string (i.e., a read-only string) 4. Argument 2 - Input type: Non-mutable pointer to a string (i.e., a read-only string) 5. Argument 3- Output type: Mutable pointer to a string