What is the expanded form of this number?

509.307


(5×100)+(9×1)+(3×110)+(7×11,000)


(5×100)+(9×10)+(3×110)+(7×11,000)


(5×100)+(9×10)+(3×1100)+(7×11,000)


(5×100)+(9×1)+(3×1100)+(7×11,000)