Please choose the correct ending to complete the given sentence: Travel: [header] How to time your trip to san francisco [title] Avoid the fog if you can, but know that it's hard to predict. [step] The city by the bay is often referred to as fog city due to the dense fog that is capable of hiding the golden gate bridge. [substeps] Summer is the worst season for foggy san francisco weather.

Ending1: Summers are often cool and overcast, too. [title] Enjoy san francisco travel in spring and early autumn. Ending2: Don't head to the bay unless you are just entering the city, as it provides incredible views. High winds can actually cloud industries so it's best to head out on cloudy days. Ending3: It's often considered one of the most upsetting months of the year for tourists. Overtraining on a foggy day isn't possible for some people. Ending4: The fog can last a year or more and is considered quite inhospitable. Other signs of fog city include cold winter and/or soot in the streets.

Answer format: ending1/ending2/ending3/ending4