If the symbol $$\wedge$$ denotes '$$\times$$' the symbol '$$\delta$$' denotes '-' and the symbol '$$\mu$$'denotes'+', '$$\phi$$' denotes'$$\div$$', then $$(5\wedge4\mu7) \delta(6\phi3\wedge5\delta3)$$=

A

20

B

53

C

14

D

52