Identify A, B, C and D parts in this diagram of bacteriophage.
A. A-Head , B - Sheath
C - Collar, D - Tail fibres
B. A - Head, B - Collar
C - Sheath, D - Tail fibres
C. A- Head, B- Collar
C - Tail fibres, D - Sheath
D. A - Head, B - Sheath
C - Tail fibres, D - Collar
