Two objects $P$ and $Q$ are placed at $10 \ cm$ and $30 \ cm$ in front of a convex lens of focal length $20 \ cm$. The correct option for the image of $P$ and $Q$ is:
- A$P$ virtual and inverted, $Q$ real and upright
- B$P$ virtual and upright, $Q$ real and inverted
- C$P$ real and inverted, $Q$ virtual and upright
- D$P$ real and upright, $Q$ virtual and inverted
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