If the fineness modulus of a sample of fine aggregates is $4.3$, the mean size of the particles in the sample is between
1. $150 \: \mu m$ and $300 \: \mu m$
2. $300 \: \mu m$ and $600 \: \mu m$
3. $1.18 \: mm$ and $2.36 \: mm$
4. $2.36 \: mm$ and $4.75\: mm$