What is the Vital Capacity $(VC)$ of our lungs?

An additional volume of air,a person can inspire by a forceful inspiration is known as

Tidal Volume and Expiratory Reserve Volume of an athlete are $500 \; mL$ and $1000 \; mL$ respectively. What will be his Expiratory Capacity if the Residual Volume is $1200 \; mL$? ........$mL$

What is the formula for $EC$ (Expiratory Capacity)?

Tidal volume is

Volume of air breathed in and out during normal breathing is called