What are some of the hallmarks or conventions of the poetic form of the ode ?

• A. Simplicity in language, brevity in form, and humorousness in attitude
• B. Complexity in language, lengthiness in form, and seriousness in attitude
• C. Simplicity in language, lengthiness in form, and humorousness in attitude
• D. Complexity in language, brevity in form, and humorousness in attitude