Fill up the blanks in the following paragraph by selecting the correct option
The vascular system of frog is well-developed `ul("I")` type. The blood vascular system involves heart, blood vessels and blood. Heart has 3 chambers, two atria and one ventricle and is covered bu a membrane called `ul("ii")`. A triangular structure called `ul("iii")` joins the right atrium.

Options

A. `{:(" (i) (ii) (iii)"),("open conus arteriosus neutrilemma"):}`
B. `{:(" (i) (ii) (iii)"),("closed sinus venosus pericardium"):}`
C. `{:(" (i) (ii) (iii)"),("open neutrilemma conus arteriosus"):}`
D. `{:(" (i) (ii) (iii)"),("closed pericardium sinus venosus"):}`

Answer

D