Which sentence best demonstrates the author's opinion of christian missionary work in china?

a.) "christianity ought to make a strong appeal to such minds, taking from them none of the joy or assurance or devotion which they possess, but promoting a deeper, better balanced interpretation of the active world, a nobler conception of god, a stronger sense of sinfulness and need, and a truer idea of the full meaning of incarnation and revelation."

b.) "it seeks to the student to discriminate, to think in terms of a devotee of buddhism when he compares that religion with christianity."

c.) "at the same time he has taken pains to exhibit and to interpret the religious life of the peasant as affected by buddhism."

d.)"no one can come into contact with the best that buddhism offers without being impressed by its serenity, assurance and power."