A college student is choosing between two data plans for her new cell phone. Both plans include an allowance of 2 gigabytes of data per month. The monthly cost of each option can be seen as a function and represented with an equation:



Option A: `A(x)=60`

Option B: `B(x)=10x+25`



In each function, the input, `x`, represents the gigabytes of data used over the monthly allowance.



Describe each data plan in words.