The method of joints helps us to find out the unknown force in the trusses joint. And the method of section helps us to make the calculation of the direction of the zero members.

• A. The first part of the statement is false and other part is true
• B. The first part of the statement is false and other part is false too
• C. The first part of the statement is true and other part is false
• D. The first part of the statement is true and other part is true too