Match the following list of bacteria and their commercially important products.
`{:("Bacterium","Product"),((i)"Aspergillus niger",(A)"Lactic acid"),((ii)"Acetobacter aceti",(B)"Butyric acid"),((iii)"Clostridium butylicum",(C)"Acetic acid"),((iv)"Lactobacillus",(D)"Citric acid"):}`
Choose the correct match.
A. `i-(B),ii-(C),iii-(D),iv-(A)`
B. `i-(B),ii-(D),iii-(C),iv-(A)`
C. `i-(D),ii-(C),iii-(B),iv-(A)`
D. `i-(D),ii-(A),iii-(C),-iv-(B)`
