Consider following statements:
(i) ROM is not used in hardwired control units.
(ii) Microprogrammed Control unit is common in CISC type systems.
(iii) Chip size if quite huge in case of Hardwired control unit than that of
Microprogrammed control unit.
(iv) To modify Hardwired control unit is an easy task than doing the same
with Microprogrammed control unit. Which of the above statements are correct:
(A) (ii) only.
(B) (ii) and (iv) only.
(C) (ii) and (iii) only.
(D) (i) and (ii) only.