Reflect triangle STU across line ST. Which ofthese is a valid reason why the image of U willcoincide with J?

The last option
Explanation:When triangle STU is reflected across line ST, angle U coincides with angle J
ST is common to triangle SUT
ST is also common to triangle SJT
ST is a reflexive property
SU corresponds to SJ
UT corresponds to JT
Hence, the image of U and J are the same distance along the same ray from T
This is in shown in the last option as B