In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint?1. Copper slag2. Cold mix asphalt technology3. Geotextiles4. Hot mix asphalt technology5. Portland cementSelect the correct answer using the code given below:

In rural road construction, the use of which of the following is prefe

1.	In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint?1. Copper slag2. Cold mix asphalt technology3. Geotextiles4. Hot mix asphalt technology5. Portland cementSelect the correct answer using the code given below:
A.	1, 2 and 3 only
B.	2, 3 and 4 only
C.	4 and 5 only
D.	1 and 5 only
Answer» B. 2, 3 and 4 only