Electric circuits — practice question

The diagram illustrates two logic gates linked together. Both inputs are low $(0)$. What logic states are present at $P$ and at $Q$?

• A$P$ high $(1)$, $Q$ high $(1)$
• B$P$ high $(1)$, $Q$ low $(0)$
• C$P$ low $(0)$, $Q$ high $(1)$
• D$P$ low $(0)$, $Q$ low $(0)$