Which Punnett square represents a cross between two parents that are heterozygous for purple flowers?

A Punnett square is shown. The columns are labeled Upper F and f. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F f, Upper F f, f f.

A Punnett square is shown. The columns are labeled f and f. The rows are labeled f and f. Clockwise from upper left the boxes contain: f f, f f, f f, f f.

A Punnett square is shown. The columns are labeled Upper F and Upper F. The rows are labeled Upper F and Upper F. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F Upper F, Upper F Upper F, Upper F Upper F.

A Punnett square is shown. The columns are labeled Upper F and Upper F. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F Upper F, Upper F f, Upper F f.

A Punnett square is shown. The columns are labeled Upper F and f. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F f, Upper F f, f f.

This Punnett square represents a cross between two parents that are heterozygous for purple flowers.