Questions 14-16 are based on the following passage about Barbie doll. You now have 15 seconds to read the questions 14-16. What do we know about Barbie from this passage

A．The patent for Barbie was obtained in 1958.
B．In 1959, Barbie received a cool reception from the toy buyers.
C．Barbie has undergone a lot of changes.
D．All of the above.