Arrange the following steps of retrieving data from memory unit.
(A) Memory Address Register send address to memory chip
(B) The address is placed on address bus
(C) The control unit sends signal
(D) Data is retrieved and place into the Memory Data Register
Options:
(a) D, C, A, B
(b) A, B, C, D
(c) A, C, D, B
(d) B, D, A, C
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