ANS:C - LSI

SSI:
Integrated circuits that have up to twelve equivalent gate circuits on a single chip.
Example: basic gates and flip-flops

MSI:
Integrated circuits that have from 12 to 99equivalent gates on a chip.
Example: encoders, decoders, counters, registers, multiplexers, arithmetic circuits, small memories.

LSI:
A classification of ICs with complexities of 100 to 9999 equivalent gates per chip.
Example: memories.

VLSI:
Integrated circuits with complexities of 10,000 to 99,999 equivalent gates per chip.

ULSI:
Complexities of 100,000 equivalent gates and greater.