Read the definitions. rung

\ ˈrəŋ \

[Middle English; Old English hrung or crossbar]

noun
1. one of the crosspieces of a ladder
2. the cross supports on the underside of a chair
3. a level of hierarchy

wrung

\ˈrəŋ\

[Middle English; Old English wringan; German ringan, "to struggle”]

transitive verb
1. past tense of the verb wring, meaning to squeeze or twist dry
2. past tense of the verb wring, meaning to extract or obtain by twisting and compressing
3. past tense of the verb wring, meaning to affect painfully

Which sentences use wrung correctly? Choose two options.

He wrung as much water out of the towel as he could before hanging it up.
When she heard the news, she wrung her hands in frustration.
The wrungs of the ladder are so unsturdy that the ladder should not be used.
The students liked to balance their feet on the wrungs of the desk chairs.
Hard work is required to reach the highest wrungs of success.