30. According to the passage, which of the following statements is true?(A) The lawyer obtained information about the circumstances of the activist’s detention.(B) The journalist willingly and voluntarily signed a statement denying any involvement in a crime.(C) The local police actively investigated the disappearance and cooperated with the victim’s relatives in reviewing CCTV footage.(D) The FSB ensured the safety and well-being of the activist during her detention when her family expressed concern about her disappearance.