The difference between a and b is 10. The number a is 4 more than 3 times the number b. Which of the following pairs of equations could be used to find the values of and b? If explanation given properly will give BRAINLIEST!!!

a) b-a=10, a=3b+4
b) a-b=10, b=3a+4
c) a/b=10, a=3b+4
d) a-b=10, a=3b+4
e) b-a=10, 3b=a+4