题目选项分析

That Buddha was born earlier than previously had been thought is not exactly proved by the recent discovery of a Buddhist shrine, but

in ascribing design elements of the shrine to a factor other than an earlier existence of Buddha,

That Buddha was born earlier than previously had been thought is not exactly proved by the recent discovery of a Buddhist shrine, but

if the elements of the shrine's design are ascribed to a factor other than an earlier existence of Buddha,