The most-famous work by the Guerrilla Girls is simple and direct, asking: “Do women have to be naked to get into the Met. Museum?”

The pointed text of the 1989 poster continues: “Less than 5% of the artists in the Modern Art Sections are women, but 85% of the nudes are female.”

That work is more than a quarter-century old, but the Guerrilla Girls have updated it over the years – with the results just as discouraging. The 2011 version states that women represent 4 percent of the artists in the modern-art sections of the Metropolitan Museum of Art but 76 percent of the nudes.

The work gets more complex as one considers it.