Which other species of Mycobacterium is able to demonstrate growth on MacConkey agar in 5 days?

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Multiple Choice

Which other species of Mycobacterium is able to demonstrate growth on MacConkey agar in 5 days?

Explanation:
MacConkey agar can support growth of some rapidly growing non-tuberculous mycobacteria, so colonies may appear within a few days. Among the listed species, the one known to reliably show growth on MacConkey in about five days is Mycobacterium chelonae (chelonei). The others are slow growers and typically take longer or fail to grow on MacConkey within that short timeframe. Therefore, this rapid-growth behavior on MacConkey within 5 days points to Mycobacterium chelonae.

MacConkey agar can support growth of some rapidly growing non-tuberculous mycobacteria, so colonies may appear within a few days. Among the listed species, the one known to reliably show growth on MacConkey in about five days is Mycobacterium chelonae (chelonei). The others are slow growers and typically take longer or fail to grow on MacConkey within that short timeframe. Therefore, this rapid-growth behavior on MacConkey within 5 days points to Mycobacterium chelonae.

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