please need help for those questions, with well explained calculations

Specing Heading Heading 2 Styles Pane . You can invest in to projects: PROJECT A A five-year scope project that consists on an initial investment of 110,000 and a set of 5 yearly revenues of 25.000 from year 1 to year 5 PROJECT B A six-year scope project that consists on an initial investment of 100,000 and a set of 6 yearly revenues of 21.000 from year 1 to year 6. a) If the cost of capital is 6%, which one would you choose and why? (15 points) b) if you only want your money back as soon as is possible. What is the best option? (10 points)