How many processes and threads will be created?

Question

I have this code and trying to understand how many process and threads will be created from this:

pid t pid; 
pid = fork(); 
if (pid == 0) { /* child process         


        

Answer 1

shouldn't it be 2 threads and 6 processes?

M
|  ↘
M     A
|     |↘
M     A*   B*
|     |    |
| ↘   | ↘  |↘
M   C A  D B  E

as I use * to represent thread.