what is true about the completly simplified difference of the polynomials
6x^6-x^3y^4-5xy^5 and 4x^5y+2x^3y^4+5xy^5
•the difference has 3 terms and a degree of 6
•the difference has 4 terms and a degree of 6
•the difference has 3 terms and a degree of 7
•the difference has 4 terms and a degree of 7
