Given the following data as of the close of trading on 10/26/18:

Quest Diagnostics (DGX): 91.47

T-bill: Asked 2.28, Days to Maturity 84

Options on DGX: expire January 18, 2019

c	X	p
23.7	70	0.35
17.5	75	0.55
12.9	80	1
8.7	85	1.95
5.2	90	3.4
2.55	95	6.1
1.1	100	9.7
0.45	105	14.2

Calculate present value of the arbitrage profit made in part d and compare it to the arbitrage profit you made in part b. Which strategy do you choose: immediate exercise or holding positions until expiration?