A naturally occuring antibiotic called mycomycin `(A)` has the structure as shown below.
`Hoverset(13)(C)-=overset(12)(C)-overset(11)(C)-=overset (10)(C)H-overset(9)(C)H=overset(8)(C)=overset(7)(C)H(overset(6)overset(4)(C)H=overset(5)overset(3)(C)H)_(2)-overset(2)(C)H_(2)overset(1)(C)OOH(A)`
Which statement is correct ?
A. Mycomycin shows four geometrical and two optical isomers.
B. Mycomycin shows two geometrical and two optical isomers.
C. Mycomcycin shows four geometrical isomers only.
D. Mycomycin shows two optical isomers only.