Which sentence contains an example clue that helps the reader understand the meaning of frugal?

Economical in the use or appropriation of resources; not wasteful or lavish; wise in the expenditure or application of force, materials, time, etc.; characterized by frugality; sparing; economical; saving; as, a frugal housekeeper; frugal of time., Obtained by, or appropriate to, economy; as, a frugal fortune.