Two Users of an Internet Gardening Site Are Arguing

Two users of an internet gardening site are arguing. Sarah, an organic gardener from Maine, refers to her snapdragon plants as "annuals". Marco, a farmer from Italy, scoffs and declares them "perennials". Who is right?

A) Sarah is right. A snapdragon plant only returns for 3-4 years, and thus is not a true perennial.
B) Marco is right. With enough inorganic fertilizer, the snapdragon can regrow. All "annuals" are just undernourished perennials.
C) They are victims of bad translation software. The plant Marco refers to reseeds itself year after year and thus is a perennial.
D) They are both right. In a Mediterranean climate, the snapdragon re-emerges from its rootstock each spring. In colder climes, it must be re-planted each year. A plant that is perennial in its native habitat may be an annual in other climates.