One of the major difference between a combinational logic circuit such as a decoder and a storage circuit such as an RS latch is that

[A] The storage circuit requires a different class of gates.

[B] The storage circuit requires a clock input.

[C] The storage circuit uses feedback

[D] The storage circuit has no propagation delay

Answer & Explanation
Option: [B]

Flip-Flop is the basic unit of storage circuits. Where Flip-Flops require a clock input.