Hello everyone. May I ask 2 questions on option 1 in EQ credit-Daylight?

A) Assuming a project go for option 1 in EQ credit Daylight. In ASE simulation, we shall demonstrate more than 10% of "regularly occupied floor area that is daylit per the sDA300/50% simulations" could fulfill the ASE requirement according to LEEDv4 reference guide.
May I know if this area represents (1) All regularly occupied space studied in sDA simulation, or (2) the regularly occupied space studied in sDA simulation that could fulfill sDA 300/50%? This could affect the study area and the overall percentage.
B) The assessment area for healthcare premises will be on the perimeter zone only, rather than all normally occupied space. Any ideas on the reasons behind?