Q. "You can't bathe in this sea," he said to me, "it's very rough."

• (A) He said that I can't bathe in this sea because it's very rough.
• (B) He said that you couldn't bathe in the sea if it was very rough.
• (C) He said that I couldn't bathe in that sea as it was very rough.
• (D) He said that you can't bathe in this sea since it was very rough.