given option B is correct

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Q1 Q2

0 0 0

2 1 0

3 1 1

1 0 1

My logic is** X **is given to **T1**(Toggle ff), **Y** is given to **D2**(Delay) so,

**0**: Q1-->0,

**2**: Q2=D2=Q1(previous state)=0,

**3**:Q2=D2=Q1(previous state)=1,

**1**:Q2=D2=Q1(previous state)=1,

As this logic for X i'm getting** T1=Q1.Q2 (Previuos state's Q1 AND Q2, then toggled)** which is not in option!

for D2, i'm getting **Q1** but unable to recognize symbol given in answer

correct anser is **(B)**