The correct answer is C. Both the outer and inner membrane.
The phospholipids bilayer of the mitochondria is both the inner and outer membranes.
Phospholipids are termed as class of lipids which are the important component of a cell membranes.
Phospholipids can form lipid bilayers reason being their amphiphilic characteristics. Phospholipids' structure consists of two hydrophobic fatty acids which are the tail and hydrophilic which is the head.
The phospholipid bilayer of the mitochondrion would be the inner and both the outer part of the membrane - C. The phospholipid bilayer is actually considered to consist of both parts of the membrane and in reality is the main constituent part of the membrane.
