Find the value of the variable and LN if M is between L and N.
LM=8a,MN=7a,LM=56LM=8a,MN=7a,LM=56

Select one:
a. a = 3.73, LN = 29.87
b. a = 7, LN = 105
c. a = 8, LN = 120
d. a = 7, LN = 49