The capacitance of a parallel-plate capacitor is given by C = K * A / d. You are constructing a parallel-plate capacitor with an adjustable distance between the plates and a surface area of 0.1 cm². The material between the plates can be changed as well. Which of the following combinations of distance between the plates and material between the plates will result in the largest capacitance? For dielectric material:
1. d = 0.20 mm and material with K = 2.0
2. d = 0.10 mm and material with K = 1.5
3. d = 0.20 mm and material with K = 1.5
4. d = 0.10 mm and material with K = 2.0