Please stretch the buffers for each question

Consider the program constructs and code snippets for the producer and consumer processes which communicate using share memory. Provide answers to the questions which follow. \#define BUF_SIZE 8 typedef struct \{ int x; char grade ; \} item; item buffer[BUF_SIZE]; int in =0, out =0, counter =0; Fiease turn over The University of the West Indies December 2022 4 (a) After the processes have executed for some time, it is found that out =7 and in =4. How many items are in the buffer? Make a sketch to show the position of the items in the buffer. Justify your answer. [1,1,1marks] (b) When in = out =5, the buffer is found to be full. Describe a scenario which resulted in this scenario. [2 marks] (c) Explain what happens when in = out =7, the buffer is empty and it's the consumer's turn to execute. [2 marks]