An assembly line is designed like this.

WS # $1-$ ABC $-50$ sec

WS #$2-$ D $-45sec$

WS #$3-$FG $-80sec$

WS #$4-H-60sec$

WS #$5-$ JKLM $-55sec$

Which workstation is the bottleneck? No calculations are required for this question.

WS #$3$

WS #$1$

WS #$4$

WS #$2$

WS #$5$