Select the Best Translation into Predicate Logic, Using the Following

Multiple Choice

select the best translation into predicate logic, using the following translation key:
b: Bhavin
c: Chloe
m: Megha
n: Nietzsche
p: Plato
Ax: x is an altruist
Jx: x is joyful
Px: x is a philosopher
Rx: x is Russian
Tx: x is thoughtful
Bxy: x is a brother of y
Mxy: x mocks y
Rxy: x is richer than y
Sxy: x is smarter than y
-Megha's only brother is Bhavin.

A) (∃x) (Bxm • x=b • ~(∃y) Bmy)
B) (∀x) (∀y) [(Bxm • Bym) ⊃ x=b]
C) Bbm • (∀x) (Bxm ⊃ x=b)
D) ~(∃x) (Bxm • x≠b)
E) Bbm • (∃x) (Bxm • x=b)