有关子宫内膜异位症，下列表述哪项是正确的？（）

A.多见于生育年龄

B.发病与卵巢的周期性排卵有一定关系

C.最易发生在部位是卵巢

D.属良性病变，但具有远处种植活力

E.卵巢异位内膜形成的囊肿很易恶变

According to the talk, who owned the receivers in the early days of radio

A．Military communications officers.

B．People who treated radio technology as a hobby.

C．People who lived in big cities.

D．People with an interest in music