(1) Which kind of latch or flip-flop is implemented in the following diagram? (Recall the difference between a flip-flop and a latch: edge-triggered vs pulse-triggered.)

Which kind of latch or flip-flop is implemented in the following diagram? (Recall the difference between a flip-flop and a latch: edge-triggered vs pulse-triggered.) input CLK O Dlatch O D flip flop O JK latch OJK flip flop OSR latch O SR flip flop O Tlatch O I flip flop OX flip flop