What is the number of ions in 0.20 mol of ${{\text{(N}}{{\text{H}}_{\text{4}}}{\text{)}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}$?

A.     $8.0 \times {10^{ - 1}}$

B.     $1.2 \times {10^{23}}$

C.     $4.8 \times {10^{23}}$

D.     $2.4 \times {10^{24}}$

C