I am betting that MES - The mini S&P 500 stays below 4200.
My strike selections are as follows>>>>
-1 FEB 10 3d 4200 C
+1 FEB 10 3d 4210 C
A really cheap pay
10 or more contracts? Consider using /ES instead and also giving yourself more room to the upside by adjusting your strikes, or widening the width between them..
Wishing you HAPPY TRADING!