Unless the context clearly indicates otherwise, the following words and terms when used herein shall have the respective meanings defined as follows:
In the case of an option, promise or undertaking, the time of receipt of the thing of economic value shall be deemed to be, respectively, the time the right to the option becomes fixed, regardless of the conditions to its exercise, and the time when the promise or undertaking is made, regardless of the conditions to its performance.
46 P.S. § 143.3