If {x} is the product of all even integers from 1 to x inclusive, what is the greatest prime factor of {26} + {24}? Choose the correct choice from the following options.
A) 23
B) 20
C) 27
D) 5
E) 2

Rationale: "soln : { 26 } + { 24 } = 26 * { 24 } + { 24 } = 27 * { 24 } answer : c"
Answer: C