According to the video lectures, which of the following is true about the centralized data processing model and the distributed data processing model of AIS?

a$.$

In the centralized model, only the centralized computer accesses the central corporate data, whereas in the distributed model, each user client computer has access

b$.$

In the distributed model, only user clients process transaction data, whereas in the centralized model, both user clients and the centralized computer do

c$.$

In both models, user clients are directed connected via a network

d$.$

None of the above