Consider the following relational algebra query:

$(({}_x{}_y=5R1)R2)|><mi\; id="EditorElement\_1861597">|</mi><mi\; id="EditorElement\_1861599">R</mi><mn\; id="EditorElement\_1861601">3</mn>$

Which of the below queries are equivalent to the query above? Select all that apply.

a$)$

$({}_x{}_y=5(R1R2))|><mi\; id="EditorElement\_1861421">|</mi><mi\; id="EditorElement\_1861423">R</mi><mn\; id="EditorElement\_1861425">3</mn>$

b$)$

$(R2{}_x{}_y=5R1)|><mi\; id="EditorElement\_1861332">|</mi><mi\; id="EditorElement\_1861334">R</mi><mn\; id="EditorElement\_1861336">3</mn>$

c$)$

$({}_x(({}_y=5R1)-(({}_y=5R1)-R2)))|><mi\; id="EditorElement\_1861228">|</mi><mi\; id="EditorElement\_1861230">R</mi><mn\; id="EditorElement\_1861232">3</mn>$

d$)$

$(({}_x{}_y=5R1)-(({}_x{}_y=5R1)-R2))|><mi\; id="EditorElement\_1861085">|</mi><mi\; id="EditorElement\_1861087">R</mi><mn\; id="EditorElement\_1861089">3</mn>$

e$)$

$(({}_y=5{}_{x}R1)R2)|><mi\; id="EditorElement\_1860958">|</mi><mi\; id="EditorElement\_1860960">R</mi><mn\; id="EditorElement\_1860962">3</mn>$