GE engages Alan as an independent contractor to work on a new project that is intended to develop a new, long-duration battery. Alan is an engineer with particular expertise in battery life. GE and Alan signed an engagement agreement, but the agreement failed to include any language addressing who would own inventions Alan made in the course of his work for GE. Over the next six months, Alan made three key inventions relating to battery life. He made them while working on GE's premises, and he used GE's equipment and supplies in the process. GE paid Alan for the time he spent making the inventions. Which is true?
a. GE owns the three battery-life inventions because they were made by its contractor.
b. GE owns the three battery-life inventions because they were made on GE's premises.
c. GE owns the three battery-life inventions because they were made using GE's equipment and supplies.
d. All of the above.
e. Alan owns the three battery-life inventions.