Question

Please help

Determine whether the function is linear or quadratic. Identify the quadratic, linear, and constant terms.

y= (x-5)(5x+4)-5x^2

A.linear function
linear term: 15x
constant term: –25

B.quadratic function
quadratic term: 5x^2
linear term: 15x
constant term: –25

C.linear function
linear term: -21x
constant term: –20

D.quadratic function
quadratic term: -5x^2
linear term: -21x
constant term: –20