What does the author imply by 'Until now such bonds have largely been the preserve of rich-country is-suers' ( Line 3-4, Para.2) ?( ) [A] The catastrophe bonds are mainly reserved by rich countries. [B] Only rich countries have the ability to issue the catastrophe bonds. [C] Rich countries seldom issue the catastrophe bonds. [D] Most of the catastrophe bonds are raised in rich countries.