BRAINLIST AND PLS HURRY!! What phrase is equivalent to the algebraic expression below?

10-3m^4

A. ten less than the product of three and the fourth power of m
B. ten minus the product of three and the fourth power of m
C. the product of three and the fourth power of m minus ten
D. ten minus the product of three and four times m

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.