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For the circuit shown, the counter state $\left(\mathrm{Q}_{1} \mathrm{Q}_{0}\right)$ follows the sequence

1. $00,01,10,11,00 \ldots$
2. $00,01,10,00,01 \ldots$
3. $00,01,11,00,01 \ldots$
4. $00,10,11,00,10 \ldots$