单项选择题

While we may be interested in the possibilities of social harmony and individual fulfillment that may be achieved through nontraditional education, one cannot help being______about accepting any such program as a______the world’s ills.

(A) concerned … warning of
(B) cautious … panacea for
(C) fastidious … prescription for
(D) reticent … renovation of
(E) agitated … postscript to