Nhận biết (M1)

Many works of the Greek mathematician Euclid (3rd century BCE) are __________ his Elements, a treatise of mathematical knowledge, is an extant work: it can still be read.

Which choice completes the text so that it conforms to the conventions of Standard English?

• A.

  lost and conversely,

• B.

  lost, conversely,

• C.

  lost. Conversely,

• D.

  lost, and conversely