PLEASE HELP TIMED
Which algebraic expression is a polynomial with a degree of 4?
A 5x^4 +square root of 4x
B x^5 – 6x^4 + 14x^3 + x^2
C 9x^4 – x^3 – x over 5
D 2x^4 – 6x^4 + 14 over x