NEET 2020 Biology question

Select the correct events that occur during inspiration. (a) Contraction of diaphragm (b) Contraction of external inter-costal muscles (c) Pulmonary volume decreases (d) Intra pulmonary pressure increases

• (A)(a) and (b)Correct
• (B)(c) and (d)
• (C)(a), (b) and (d)
• (D)only (d)