Available choices:
(a). No;
(b). Yes;
Q: I am verifying the answers generated by an automatic system to the following question: what are some chinese inventions Suggested answer: With the navigational aid of the 11th-century compass and ability to steer at high sea with the 1st-century sternpost rudder , premodern Chinese sailors sailed as far as East Africa and Egypt . Should I validate this answer?
A:
(a).