The microsphere nanoscope is a powerful tool that allows humans to see structures 9 × 10–9 meter in diameter. How is this number expressed in standard form





F 0.000000009
F , 0.000000009

G 0.0000000009
G , 0.0000000009

H 9,000,000,000
H , 9,000,000,000

J 900,000,000