Which of the following statement is true about RBCs in humans?

Options

A. They carry about 20-25 per cent of`CO_(2 )`
B. They transport 99.5 per cent of `O_2`
C. They transport about 80 per cent oxygen only and the rest 20 per cent of its transported in dissolved state in blood plasma
D. They do not carry `CO_(2)` at all

Answer

A