Correct

有凭有据

/ yǒu píng yǒu jù /
Strokes

Example

Definition

be fully substantiated; be furnished with proof and evidence; be well-documented

1
Yīnwèi
因为
shuō
de
似乎
yǒupíngyǒu
有凭有据
  
,
jiā
大家
jiù
xìnwéizhēn
信以为真
  

Since his statement seemed well-founded, all the others accepted it immediately.