SALALAH Company is considering purchasing new equipment to be attached to the main manufacturing machine. The equipment will cost $3.5 and will increase annual cash inflow by $2,200. The useful life of the equipment is 6 years. The management wants a 20% return on all investments. You are requested to compute the net present value (NPV) of this investment project. a. 7312.60 O b.-7319.60 c. 6553.50 d. All the given choices are not correct