The debits and credits from four related transactions, $(1)$ through $(4),$ are presented in the following T accounts. Assume that the freight terms were FOB shipping point and that the credit terms were $\frac{1}{10},\frac{n}{30}.$

$\backslash$table$[[,$Accounts Payable,$\backslash$table$[[150],[11,880]]],[(3),2,000,(1),14,000],[(4),12,000,,]]$

$\backslash$table$[[$Inventory$],[(1),14,000,(3),2,000],[(2),150,(4),120]]$

a$.$ Describe each transaction.

$1.$

$2.$

$3.$

$4.$