The correct option is B Electrons of one atom are shared between two atoms
Coordinate bond is a special case of covalent bond. In this, the shared pair of electrons is contributed only by one of the two atoms in a chemical bond in order to complete the octet. The atom which donates the electron pair is called the donor. It must have already completed its octet and it must have atleast one lone pair of electrons for donation. The atom which accepts the electron pair in order to complete its octet is called acceptor. The bond is represented by an arrow (→) pointing from the donor towards the acceptor.