This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lab Investigations, Subject name: Microbiology
In which of the following ways is CLED medium better than McConkey agar for UTI (AIIMS NOV. 2020) 
Select and explain. 
A. It differentiates lactose fermenters from Non-fermenters, B. It prevents proteus swarming, C. Inhibits growth of other commensals, D. It allows staphylococcus and Candida to grow
D: It allows staphylococcus and Candida to grow
Answer: D: It allows staphylococcus and Candida to grow 
Explanation: CLED ( Cysteine Lactose Electrolyte Deficient Media )- Inhibits growth of other commensals & allows staphylococcus and Candida to grow. It enhaces the growth of dwarf colonies of coliforms d/t presence of cysteine McConkey and CLED both prevent swarming of Proteus and differentiate between LF and NLF. Gram positive organisms usually can't grow in McConkey, it is selective for gram negative organisms.