下列那種膽汁成分之相對比例，最易導致膽結石的產生？
膽鹽30%、卵磷脂60%、膽固醇10%
膽鹽40%、卵磷脂55%、膽固醇5%
膽鹽80%、卵磷脂10%、膽固醇10%
膽鹽60%、卵磷脂25%、膽固醇15%
