Which statement best describes the difference between myoglobin and hemoglobin Hill plots?

Myoglobin has three distinct regions, while hemoglobin has a single line with a slope of 1.

Hemoglobin has a single line with a slope of 3, while myoglobin has three distinct regions.

Both myoglobin and hemoglobin have a single line with a slope of 1.

Myoglobin has a single line with a slope of 1, while hemoglobin has three distinct regions with varying slopes.