What do the terms OpEx and CapEx refer to? 

Answer options:

A. OpEx refers to Operational Expansion and CapEx refers to Capital Expenses.
B. OpEx refers to Operational Example and CapEx refers to Capital Example.
C. OpEx refers to Operational Excellence and CapEx refers to Capital Excellence.
D. Opes refers to Operational Expenditure and CapEx refers to Capital Expenditure.

D

Reference: https://www.investopedia.com/ask/answers/112814/whats-difference-between-capital-expenditures-capex-and-operational-expenditures-opex.asp