A recurring theme in Kassfy's essay is that $"[$b$]$eing social worked for $[$her$]-$until it didn't." Considering this theme, how might Kassfy explain why she couldn't calm the customer down?

a$.$ "The customer's problem was highly technical, so I couldn't help her because I wasn't a certified mechanic."

b$.$ "I discovered that socializing with people on a personal level was different than dealing with them in a customer$-$service capacity."

c$.$ "I was good at socializing online, but dealing with real people was a bigger challenge."

d$.$ "Since my father resolved the problem so quickly, I realized the problem wasn't my social skills but my age."