Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to prevent unsolicited commercial email [title] Recognize unsolicited commercial emails. [substeps] Such emails often have topics that are tailored to gain your curiosity. For example, it may indicate that it has a joke about a well-known figure or that action is required on your part.

Ending1: These emails typically come from people or businesses that you do not know. Such emails may identify the sender as having a common name, such as joe. Ending2: However, you should always watch out for, or ignore, fbull email correspondences on a regular basis. These are emails that are designed to entice you in writing to make a deal. Ending3: Be aware that the subject of these emails may be in fact from an innocuous person. For example, it may indicate that someone needs your assistance at the funeral home. Ending4: It's usually a bad idea to delay writing an email when you're unsure of what to write. If your email has a certain topic under the title, be wary.

Answer format: ending1/ending2/ending3/ending4