Find the Discounted Payback Period (DPP) for Oman Sofa Company if the initial investment is 12000 OMR and the cash Inflows are as follows: Year 1 =5000 OMR; Year 2 = 4000 OMR: Year 3=3000 OMR and Year 4=5000 OMR. Use discount rate as 15% Select one: O a 2.3 Years b. 3.9 Years O c. 4.2 Years Ed. None 3.4 Years