Max penalty Collector may impose:

Administrative authorities, such as a Collector, are typically empowered to impose penalties, but these powers are always subject to specific legal limits to ensure fairness and prevent arbitrary actions.

• Option B: 10k is the correct maximum penalty a Collector may impose, according to the specific legal framework governing their powers (e.g., under a particular land revenue or administrative act). This amount is a statutory limit designed to cap the financial liability for certain offenses.
• Options A (5k), C (50k), and D (100k) are incorrect because they do not align with the specific legal maximum prescribed for the Collector's authority in this context. The exact figure is determined by the relevant legislation.