How many storage engines among the following are transaction-safe?

InnoDB, Falcon, MyISAM, MEMORY

This question is about storage engines in MySQL. Storage engines are like different ways to store and retrieve data in your database.

Some storage engines are transaction-safe. This means they make sure that changes to your data are done correctly, even if something goes wrong in the middle.

You need to figure out which of the storage engines listed are transaction-safe. The options are:

* InnoDB * Falcon * MyISAM * MEMORY

To answer the question, you'll need to know if each of these storage engines is transaction-safe. If you're not sure, you can look up information about each engine online.

Once you know which engines are transaction-safe, count them up. The answer will be the number of transaction-safe engines out of the four listed.