Can u hurry and answer this, i will mark the brainliest!

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

How to do this , and can some one explain