Nitration of furan using acetyl nitrate also leads to a 2,5-addition product. How can this competing process be suppressed?

By using nitric acid instead of acetyl nitrate

By using concentrated nitric and sulfuric acids instead of acetyl nitrate

By carrying out the reaction at higher temperatures

By carrying out the nitration in the presence of pyridine

By using nitric acid instead of acetyl nitrate

Nitration of furan using acetyl nitrate also leads to a 2,5-addition

1.	Nitration of furan using acetyl nitrate also leads to a 2,5-addition product. How can this competing process be suppressed?
A.	By using concentrated nitric and sulfuric acids instead of acetyl nitrate
B.	By carrying out the reaction at higher temperatures
C.	By carrying out the nitration in the presence of pyridine
D.	By using nitric acid instead of acetyl nitrate
Answer» D. By using nitric acid instead of acetyl nitrate