In line 7 of "Digging," what is meant by "comes up twenty years away"?a.The speaker can finally see what he should have seen 20 years ago.c.The speaker is carried 20 years into the past by the sight of his father.b.The speaker has been trying for 20 years to master his father's work.d.If the speaker tried for 20 years, he couldn't do the work of his father.