having trouble with this , can someone explain.

A. f() is continuous at = = 1 B. f(:) is not continuous at 1 = 1 A. f(x) is continuous at r = 2. because f(1) is undefined. B. f(x) is not continuous at I - 2 c. f(x) is not continuous at z = 1 because f(2) is undefined. because lim f(I) does not exist. "c. f(x) is not continuous at = = 2 because lim f (I) does not exist. D. f(x) is not continuous at z = 1 because f(1) and lim f(x) exist, but are "D. f(x) is not continuous at = = 2 because f(2) and lim f(x) exist, but are not equal not equal A. f(2) is continuous at z = 1 DA. f(I) is continuous at I = 2 B. f() is not continuous at a= B. f(x) is not continuous at = = 2 because f (-1) is undefined. because f(2) is undefined. c. f(z) is not continuous at D = -1 c. f(z) is not continuous at a = 2 because lim f(x) does not exist. because lim f(x) does not exist " D. f(x) is not continuous at r - -1 D. f(x) is not continuous at = = 2 because f(- 1) and lim f(x) exist, but because f(2) and lim f(x) exist, but are are not equal not equal