If 0.50 mole of a monovalent metal $$M^{+1}$$ halide is mixed with 0.2 mole of a divalent metal $$L^{+2}$$ phosphate, the maximum number of moles of $$M_3PO_4$$ that can be formed is

A

0.25

B

0.30

C

0.16

D

0.20