Select the Best Translation into Predicate Logic, Using the Following

Multiple Choice

select the best translation into predicate logic, using the following translation key:
a: Ahmed
b: Bhavin
c: Chloe
d: Delfina
e: Eduardo
i: Irving
f(x) : the father of x
g(x) : the mother of x
f(x,y) : the only son of x and y
Lxy: x loves y
Sxy: x is a sister of y
Txy: x teaches y
-Chloe is Irving's sister; they share a father.

A) Sci • (∃x) f(x) =f(c)
B) Sic • (∃x) f(x) =f(i)
C) Sci • f(i) =c
D) Sci • f(c) =f(i)
E) Sic • f(c) =f(i)