Finish the following sentence with the best choice: Pull-start a lawnmower.

Choices:
- Grasping the handle of the pull string lightly, push firmly, multiple times if necessary, until the engine starts.
- Grasping the handle of the pull string tightly, pull firmly, multiple times if necessary, until the engine starts.

Answer:
Grasping the handle of the pull string tightly, pull firmly, multiple times if necessary, until the engine starts.