Create a function named most_courses: Can't figure out how to continue.

# The dictionary will look something like:
# {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Each key will be a Teacher and the value will be a list of courses.
#
# Your code goes below here.

def num_teachers(some_dict):
    count = 0
    for keys in some_dict:
        count += 1
    return count


def num_courses(some_dict):
    courses = 0
    for values in some_dict.values():
        for inner_values in values:
            courses += 1
    return courses


def courses(some_dict):
    courses_list = []
    for values in some_dict.values():
        for inner_values in values:
            courses_list.append(inner_values)
    return courses_list


def most_courses(some_dict):
    current_max = 0
    new_max = 0
    best_teacher = ""
    for values in some_dict.values():
        for inner_values in values:
            new_max += 1
        if new_max > current_max:
            current_max = new_max
            best_teacher = ????

    return best_teacher