A new implantable drug delivery device is being developed in your lab. The device prototype is a very thin strip (0.1mm *1mm *15mm) of polymer coated on both sides with 22 milligrams of solid drug particles. To test the drug delivery profile, you "implant the device by suspending it in a homogenous model fluid that has following properties: viscosity = 0.0018 Pa.s, density = 1.32 g cm^-3, temperature = 37°C. The diffusivity of the drug is estimated to be 2.113×10^-6 cm^2/s. A) After 15 minutes, what do you expect the concentration of the drug to be 1 mm from the device? B) Determine how far the drug would penetrate into the fluid in 2.2 hours. C) clearly explain how you would determine the flux of drug at the surface of the device 10 minutes after implantation. Provide relevant assumptions, equations, and any other information that would be required for your solution.