Consider the following relation:

A	B	C	D
10	b1	c1	d1
10	b2	c2	d1
11	b4	c1	d1
12	b3	c4	d1
13	b1	c1	d2
14	b3	c4	d2
15	b1	c1	d2
15	b2	c2	d2

Given the previous extension (state), which of the following dependencies may hold in the above relation?

{AB}{C}

{C}{B}

{A, C, D}{B}

{B}{A, C}