The prefixes erythro and threo are used for distinguishing a pair of enantriomers containing two chiral carbon atoms when two of the atoms or groups on each chiral carbon atom are the two identical groups are on the same side of the Fischer projection formula, is called the erythro isomer while the isomer, in which the two identical groups are on the opposite sides of the fischer projection formula, is called the Threo isomer. Which among the following is a threo isomer?

The prefixes erythro and threo are used for distinguishing a pair of e

1.	The prefixes erythro and threo are used for distinguishing a pair of enantriomers containing two chiral carbon atoms when two of the atoms or groups on each chiral carbon atom are the two identical groups are on the same side of the Fischer projection formula, is called the erythro isomer while the isomer, in which the two identical groups are on the opposite sides of the fischer projection formula, is called the Threo isomer. Which among the following is a threo isomer?
Answer» ANSWER :B