D And F Block Elements

Choose the correct statements from the following

A. \(\mathrm{Mn}_2 \mathrm{O}_7\) is an oil at room temperature

B. \(\mathrm{V}_2 \mathrm{O}_4\) reacts with acid to give \(\mathrm{VO}_2{ }^{2+}\)

C. \(\mathrm{CrO}\) is a basic oxide

D. \(\mathrm{V}_2 \mathrm{O}_5\) does not react with acid

Choose the correct answer from the options given below :