Sabine Wren - Are the Fireworks Optional?

[MattIsTyping]

Sabine Wren, Spectre-5's activated ability reads:

 

Quote

I'm gonna go add some fireworks to the celebration 

One character in this Unit may choose an objective within range 4 and roll 5 Attack Dice. Each Unit within range 2 of that objective suffers [damage] for each [expertise] result in the roll. Then one character in this Unit may jump.

Can Sabine use this ability just to jump if there are no objectives within range 4? Can she opt to not choose an objective if there is one within range 4 and still jump?

[Negoldar]

10 hours ago, MattIsTyping said:

Can Sabine use this ability just to jump if there are no objectives within range 4? Can she opt to not choose an objective if there is one within range 4 and still jump?

Selecting an objective and making the Jump movement are both optional. She does not have to do either.