A) A-Head, B-collar, C-Sheath, D-Tail fibres
B) A-Collar, B-Head, C-Sheath, D-Tail fibres
C) A-Head, B-Collar, C-Tail fibres, D-Sheath
D) A-Collar, B-Tail fibres, C-Head, D-Sheath
Explanation
The correct answer is Option A: A-Head, B-collar, C-Sheath, D-Tail fibres.
A detailed explanation for this question is being prepared.