Which of the examples work in PowerShell version 3, but not in PowerShell version 2?

Which of the examples work in PowerShell version 3, but not in PowerShell version 2?

• $collection | where $_.property -eq 'test'
• $collection.where({$_.property -eq 'test'})
• $collection | where property -eq 'test'
• $collection | where {$_.property -eq 'test'} 

EXPLANATION

PowerShell v2 and v3 Differences
Where-Object no longer requires braces (source)

PS v2.0:
Get-Service | Where { $_.Status -eq 'running' }

PS v3.0:
Get-Service | Where Status -eq 'running'

PS V2.0 Error Message:
    Where : Cannot bind parameter ‘FilterScript’. Cannot convert the “[PropertyName]” value of the type “[Type]” to type “System.Management.Automation.ScriptBlock”.