HELP ASAP I WILL GIVE BRAINLIST! Which formula can be used to calculate the molar mass of ammonia (NH3)? (5 points)

molar mass of N + molar mass of H

3 × molar mass of N + molar mass of H

molar mass of N + 3 × molar mass of H

3 × molar mass of N + 3 × molar mass of H