According to the Official Style Guide

question 27

Multiple Choice

According to the official Style Guide:

• A) you should capitalize function names, events and contract names, to avoid confusion with JavaScript. You should use Tabs to indentation and a maximum of 80 characters per line.
• B) contract names should be capitalized, while functions should be mixedCase. You should use 4 spaces as indentation and a maximum of 79 (or 99) characters per line.
• C) contract should be mixedCase, as well as function names. Events should be capitalized. 2 spaces should be used as indentation and a maximum of 120 characters per line.

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Definitions:

Gallons

A unit of measurement for volume primarily used in the United States, equal to 3.785 liters.

Gas

A state of matter consisting of particles that are not bound together, allowing it to expand to fill the shape of its container, commonly used as a fuel or energy source.

Special Bonus

An additional payment or reward given to an employee or group, often as recognition for exceptional work or achievement.

Fund

A pool of money set aside for a specific purpose or invested in a variety of financial instruments to generate returns for its investors.