At December 31, 2020, Tamarisk Corporation had a projected benefit obligation of $557,200, plan assets of $310,600, and prior service cost of $120,600 in accumulated other comprehensive income. Determine the pension asset/liability at December 31, 2020. (Enter llability using elther a negative slgn preceding the number eg. 45 or parentheses eg. (45).) Pension asset/liability at December 31,2020