In SI unit of time Picosecond is equal to how many seconds

In SI unit of time Picosecond is equal to how many seconds
A: 10⁻⁶
B: 10⁻¹²
C: 10⁻⁸
D: None of these

A picosecond is one trillionth of a second (10⁻¹² s). Such scales matter in ultrafast lasers and semiconductor physics. Time resolutions at this level probe molecular dynamics.