Identify the correct combination from the following pertaining to red muscle fibres and white muscle fibres.

	Red muscle fibres	White muscle fibres
1.	Fewer mitochondria	Numerous mitochondria
2.	Low content of myoglobin	More content of myoglobin
3.	Mainly depend on anaerobic process for energy	Mainly depend on aerobic process for energy
4.	Less abundant sarcoplasmic reticulum	More abundant sarcoplasmic reticulum

Red muscle fibres: These muscle fibres are rich in myoglobin (which gives them a red color) and have a high density of mitochondria. Myoglobin stores oxygen, enabling these fibres to rely on aerobic metabolism for energy production. 

White muscle fibres: These muscle fibres have a lower myoglobin content (making them appear paler) and fewer mitochondria compared to red muscle fibres. They rely more on anaerobic metabolism (glycolysis) for energy production, as they are less dependent on oxygen. White muscle fibres also have high sarcoplasmic reticulum compared to red muscle fibres.