CHART^ Sam took a out loan for $1,000 with a simple monthly interest rate of 5%.The table shows the last 3 months.

The chart is up^^

At this rate what will the balance be in September
A)$50
B)$100
C)$150
D)$200

I think the answer is $150

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)