Distributed computer System Question Bank accounts $a,b,c$ contain values $,,,$ respectively. Concurrent transfers of certain amounts from accounts $a,b$

to $c$ are carried out by the following programs $(ra,rb$ are working variables$)$:

transfer of $200$ from account a to account $c$ :

transfer of $50$ from account $b$ to account $c$ :

What may be the balance of the $c$ account after transfers when:

update $c$ is not protected by a critical section? List all possible values of $c.$

update $c$ is protected then $c=...$