Using this table, what are the requirements related to business flow$-2($BF$-2)?$

Requirement Area

Prefix

Requirement Statement Numbering

Individual functionality

IF

IF$-1\mathrm{.}1,$ IF$-1\mathrm{.}2,$ IF$-1\mathrm{.}3,$ IF$-2\mathrm{.}1$

Business Flow

BF

BF$-1,$ BF$-2$

Data and data format

DF

DF$-1\mathrm{.}1,$ DF$-1\mathrm{.}2,$ DF$-2\mathrm{.}1$

User interface

UI

UI$-1\mathrm{.}1,$ UI$-1\mathrm{.}2,$ UI$-2\mathrm{.}1$

Interface to systems

IS

IS$-1$

Further constraints

FC

FC$-1$

Question $19$ options:

a$)$

IF$-1\mathrm{.}1,$ IF$-1\mathrm{.}2,$ IF$-1\mathrm{.}3,$ IF$-2\mathrm{.}1$

b$)$

IF$-2\mathrm{.}1,$ DF$-2\mathrm{.}1,$ UI$-2\mathrm{.}1$

c$)$

IS$-1,$ FC$-1$

d$)$

BF$-2$n

e$)$

None of these are correct.