Conditional Formatting Red or Green Cells and Sum the amount in a "total cell"

Hi,

I need help figuring out a formula that will change the colour of a cell to red if a letter "I" is entered, or green if a letter "A" is entered. I also need the formula to calculate the total number of "A"s that have been entered for a particular row and the total number of "I"s for a particular row. I've attached an image which may help. Conditional formatting.PNG

Thank you in advance!

for CF

select first cell in range e.g, B2

=B2="A"

set colour to Green

Set "Applies to" to your required range e.g B2:Z100

Same for I

to count

=COUNTIF(Range,"A")