Which of the following produces maleic anhydride on oxidation?

Which of the following produces maleic anhydride on oxidation?

مندرجہ ذیل میں سے کون سا آکسیڈیشن پر مالیک اینہائیڈرائڈ پیدا کرتا ہے؟
Explanation

Maleic anhydride is produced from benzene by the following

oxidation reaction: C6H6 +4.5 O2 → C4H2O3 + 2CO2 + 2H2 100 k mol /h of carbon dioxide CO2 are produced in a reactor.

The reactor feed consists only of benzene and oxygen.