"In for a penny, in for a pound", means:
- A. Used to say: very expensive to purchase
- B. Used to say: finish a project once started at any cost
- C. Used to say: leave as soon as possible
- D. Used to say: having an intense and selfish desire for wealth or power.
Explanation
This idiom means that once an undertaking has begun, one should continue and complete it despite additional cost or difficulty. The penny and pound refer to increasing commitment, not simply expense.