Question 7Factorize completely 3a + 125ax3A.(2a + 5x2)(4 + 25ax)B.a(2 + 5x)(4 -10x + 25x2)C.(2a + 5x)(4 -10ax 25x2)D.a(2 + 5 x)( 4 + 10ax 25x2)Objective Show full explanation