You are standing at $x=8\mathrm{.}5km.$ Lightning bolt $1$ at $x=0km$ and lightning boit $2$ at $x=12\mathrm{.}5km.$ Both flashes reach your eye at the same time. Your assistant is standing at $x=3\mathrm{.}0km.$

Part A

Does your assistant see the flashes at the same time?

yes

no