A number totals 4 times C and L

Question

A. L=4C+X

B. X=4(C+L)

C. X=4C+L

D. X=4L+C

Answer 1

Answer   is    B      because AND implies that C & L must be added, first.

 

But the phrase ought to be " a number equals four times the sum of C and L " to be perfectly unambiguous.