ABC pharmaceuticals recently launched a new covid vaccine and due to the current covid situation the company shares doubled in price over the following week. Which form of efficiency is not consistent with the above outcome. Critically evalute.

a. Gabby PLC has an investment opportunity as follows. $45,000 Initial investment After-tax cash flow Y1 Y2 14,000 14,000 10,000 Y3 Y4 10,000 Y5 8,000 Discount rate 8% Calculate the NPV and explain your decision on this project based on the shareholder point of view