For the month of January Chloe is training to run a marathon she wants to run a

For the month of January Chloe is training to run a marathon she wants to run a total of 375 Miles during January ,on January 1st she ran 15 miles .which equation represents how many miles Chloe will have to run each day for the rest of the month to accomplish her goal of 375 miles for the month of January.

show your work please

A. 15x + 30 = 375

B. 30x + 15 = 375

C. 15x + 31 = 375

D. 31x + 15 = 375