Plate bearing test with 20 cm diameter plate on soil subgrade yielded a pressure of 1.25 x 105 N/m2 at 0.5 cm deflection. What is the elastic modulus of subgrade?

• 56.18 x 105 N/m2
• 22.10 x 105 N/m2
• 44.25 x 105 N/m2
• 50.19 x 105 N/m2
• None.