William Shakespeare is perhaps the most well-known playwright in the world. There is, however, a small but vocal group, known as "anti-Stratfordians," who claim that Shakespeare could not possibly have written the plays and poems attributed to him. They point out that these works show an extraordinary level of sophistication, and there is no evidence that Shakespeare, born to humble beginnings in Stratford-upon-Avon in 1564, received any kind of formal education.

Consider each of the following choices separately and select all that apply.

Which of the following, if true, would tend to refute the claim made by the anti-Stratfordians?

A. Other well-known playwrights of the era also came from families of lower socioeconomic status.
B. There is no general consensus among anti-Stratfordians as to who actually wrote Shakespeare's plays.
C. The grammar school in Stratford-upon-Avon has no surviving records for any students from that era.