To be classified as nanoscale, objects must have dimensions of the order of:
(A) $1 \times 10^{-9} \text{ m}$
(B) $2 \times 10^{-9} \text{ m}$
(C) $3 \times 10^{-9} \text{ m}$
(D)$4 \times 10^{-9} \text{ m}$
Choose the correct answer from the options given below: